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Chiropractic for Low Back Pain and Sciatica

Chiropractic for Low Back Pain and Sciatica

Chiropractic Management of Low Back Pain and Low Back-Related Leg Complaints: A Literature Synthesis

 

Chiropractic care is a well-known complementary and alternative treatment option frequently used to diagnose, treat and prevent injuries and conditions of the musculoskeletal and nervous systems. Spinal health issues are among some of the most common reasons people seek chiropractic care, especially for low back pain and sciatica complaints. While there are many different types of treatments available to help improve low back pain and sciatica symptoms, many individuals will often prefer natural treatment options over the use of drugs/medications or surgical interventions. The following research study demonstrates a list of evidence-based chiropractic treatment methods and their effects towards improving a variety of spinal health issues.

 

Abstract

 

  • Objectives: The purpose of this project was to review the literature for the use of spinal manipulation for low back pain (LBP).
  • Methods: Asearch strategymodified fromthe Cochrane Collaboration reviewforLBP was conducted through the following databases: PubMed, Mantis, and the Cochrane Database. Invitations to submit relevant articles were extended to the profession via widely distributed professional news and association media. The Scientific Commission of the Council on Chiropractic Guidelines and Practice Parameters (CCGPP) was charged with developing literature syntheses, organized by anatomical region, to evaluate and report on the evidence base for chiropractic care. This article is the outcome of this charge. As part of the CCGPP process, preliminary drafts of these articles were posted on the CCGPP Web site www.ccgpp.org (2006-8) to allow for an open process and the broadest possible mechanism for stakeholder input.
  • Results: A total of 887 source documents were obtained. Search results were sorted into related topic groups as follows: randomized controlled trials (RCTs) of LBP and manipulation; randomized trials of other interventions for LBP; guidelines; systematic reviews and meta-analyses; basic science; diagnostic-related articles, methodology; cognitive therapy and psychosocial issues; cohort and outcome studies; and others. Each group was subdivided by topic so that team members received approximately equal numbers of articles from each group, chosen randomly for distribution. The team elected to limit consideration in this first iteration to guidelines, systematic reviews, meta-analyses, RCTs, and coh ort studies. This yielded a total of 12 guidelines, 64 RCTs, 13 systematic reviews/meta-analyses, and 11 cohort studies.
  • Conclusions: As much or more evidence exists for the use of spinal manipulation to reduce symptoms and improve function in patients with chronic LBP as for use in acute and subacute LBP. Use of exercise in conjunction with manipulation is likely to speed and improve outcomes as well as minimize episodic recurrence. There was less evidence for the use of manipulation for patients with LBP and radiating leg pain, sciatica, or radiculopathy. (J Manipulative Physiol Ther 2008;31:659-674)
  • Key Indexing Terms: Low Back Pain; Manipulation; Chiropractic; Spine; Sciatica; Radiculopathy; Review, Systematic

 

The Council on Chiropractic Guidelines and Practice Parameters (CCGPP) was formed in 1995 by the Congress of Chiropractic State Associations with assistance from the American Chiropractic Association, Association of Chiropractic Colleges, Council on Chiropractic Education, Federation of Chiropractic Licensing�Boards, Foundation for the Advancement of Chiropractic Sciences, Foundation for Chiropractic Education and Research, International Chiropractors Association, National Association of Chiropractic Attorneys, and the National Institute for Chiropractic Research. The charge to the CCGPP was to create a chiropractic �best practices� document. The Council on Chiropractic Guidelines and Practice Parameters was delegated to examine all existing guidelines, parameters, protocols, and best practices in the United States and other nations in the construction of this document.

 

Toward that end, the Scientific Commission of CCGPP was charged with developing literature syntheses, organized by region (neck, low back, thoracic, upper and lower extremity, soft tissue) and the nonregional categories of nonmusculoskeletal, prevention/health promotion, special populations, subluxation, and diagnostic imaging.

 

The purpose of this work is to provide a balanced interpretation of the literature to identify safe and effective treatment options in the care of patients with low back pain (LBP) and related disorders. This evidence summary is intended to serve as a resource for practitioners to assist them in consideration of various care options for such patients. It is neither a replacement for clinical judgment nor a prescriptive standard of care for individual patients.

 

Image of a chiropractor performing spinal adjustments and manual manipulations for low back pain and sciatica.

 

Methods

 

Process development was guided by experience of commission members with the RAND consensus process, Cochrane collaboration, Agency for Health Care and Policy Research, and published recommendations modified to the needs of the council.

 

Identification and Retrieval

 

The domain for this report is that of LBP and low backrelated leg symptoms. Using surveys of the profession and publications on practice audits, the team selected the topics for review by this iteration.

 

Topics were selected based on the most common disorders seen and most common classifications of treatments used by chiropractors based on the literature. Material for review was obtained through formal hand searches of published literature and of electronic databases, with assistance from a professional chiropractic college librarian. A search strategy was developed, based upon the CochraneWorking Group for Low Back Pain. Randomized controlled trials (RCTs), systematic reviews/meta-analyses, and guidelines published through 2006 were included; all other types of studies were included through 2004. Invitations to submit relevant articles were extended to the profession via widely distributed professional news and association media. Searches focused on guidelines, meta-analyses, systematic reviews, randomized clinical trials, cohort studies, and case series.

 

Evaluation

 

Standardized and validated instruments used by the Scottish Intercollegiate Guidelines Network were used to evaluate RCTs and systematic reviews. For guidelines, the Appraisal of Guidelines for Research and Evaluation instrument was used. A standardized method for grading the strength of the evidence was used, as summarized in Figure 1. Each team’s multidisciplinary panel conducted the review and evaluation of the evidence.

 

Figure 1 Summary of Grading of Strength of Evidence

 

Search results were sorted into related topic groups as follows: RCTs of LBP and manipulation; randomized trials of other interventions for LBP; guidelines; systematic reviews and meta-analyses; basic science; diagnosticrelated articles; methodology; cognitive therapy and psychosocial issues; cohort and outcome studies; and others. Each group was subdivided by topic so that team members received approximately equal numbers of articles from each group, chosen randomly for distribution. On the basis of the CCGPP formation of an iterative process and the volume of work available, the team elected to limit consideration in this first iteration to guidelines, systematic reviews, meta-analyses, RCTs, and cohort studies.

 

Dr. Alex Jimenez’s Insight

How does chiropractic care benefit people with low back pain and sciatica?�As a chiropractor experienced in the management of a variety of spine health issues, including low back pain and sciatica, spinal adjustments and manual manipulations, as well as other non-invasive treatment methods, can be safely and effectively implemented towards the improvement of back pain symptoms. The purpose of the following research study is to demonstrate the evidence-based effects of chiropractic in the treatment of injuries and conditions of the musculoskeletal and nervous systems. The information in this article can educate patients on how alternative treatment options can help improve their low back pain and sciatica. As a chiropractor, patients may also be referred to other healthcare professionals, such as physical therapists, functional medicine practitioners and medical doctors, to help them further manage their low back pain and sciatica symptoms. Chiropractic care can be used to avoid surgical interventions for spine health issues.

 

Results and Discussion

 

A total of 887 source documents were initially obtained. This included a total of 12 guidelines, 64 RCTs, 20 systematic reviews/meta-analyses, and 12 cohort studies. Table 1 provides an overall summary of the number of studies evaluated.

 

Table 1 Number of Sources Rated by the Interdisciplinary Team of Reviewers and Used in Formulating Conclusions

 

Assurance and Advice

 

The search strategy used by the team was that developed by van Tulder et al, and the team identified 11 trials. Good evidence indicates that patients with acute LBP on bed rest have more pain and less functional recovery than those who stay active. There is no difference in pain and functional status between bed rest and exercises. For sciatica patients, fair evidence shows no real difference in pain and functional status between bed rest and staying active. There is fair evidence of no difference in pain intensity between bed rest and physiotherapy but small improvements in functional status. Finally, there is little difference in pain intensity or functional status between shorter-term or longer-term bed rest.

 

A Cochrane review by Hagen et al demonstrated small advantages in short-term and long-term for staying active over bed rest, as did a high-quality review by the Danish Society of Chiropractic and Clinical Biomechanics, including 4 systematic reviews, 4 additional RCTS, and 6 guidelines, on acute LBP and sciatica. The Cochrane review by Hilde et al included 4 trials and concluded a small beneficial effect for staying active for acute, uncomplicated LBP, but no benefit for sciatica. Eight studies on staying active and 10 on bed rest were included in an analysis by the group of Waddell. Several therapies were coupled with advice to stay active and include analgesic medication, physical therapy, back school, and behavioral counseling. Bed rest for acute LBP was similar to no treatment and placebo and less effective than alternative treatment. Outcomes considered across the studies were rate of recovery, pain, activity levels, and work time loss. Staying active was found to have a favorable effect.

 

Review of 4 studies not covered elsewhere assessed the use of brochures/booklets. The trend was for no differences in outcome for pamphlets. One exception was noted�that those who received manipulation had less bothersome symptoms at 4 weeks and significantly less disability at 3 months for those who received a booklet encouraging staying active.

 

In summary, assuring patients that they are likely to do well and advising them to stay active and avoid bed rest is a best practice for management of acute LBP. Bed rest for short intervals may be beneficial for patients with radiating leg pain who are intolerant of weight bearing.

 

Adjustment/Manipulation/Mobilization Vs Multiple Modalities

 

This review considered literature on high-velocity, lowamplitude (HVLA) procedures, often termed adjustment or manipulation, and mobilization. The HVLA procedures use thrusting maneuvers applied quickly; mobilization is applied cyclically. The HVLA procedure and mobilization may be mechanically assisted; mechanical impulse devices are considered HVLA, and flexion-distraction methods and continuous passive motion methods are within mobilization.

 

Image of a chiropractor performing spinal adjustments and manual manipulations for low back pain and sciatica.

 

The team recommends adopting the findings of the systematic review by Bronfort et al, with a quality score (QS) of 88, covering literature up to 2002. In 2006, the Cochrane collaboration reissued an earlier (2004) review of spinal manipulative therapy (SMT) for back pain performed by Assendelft et al. This reported on 39 studies up to 1999, several overlapping with those reported by Bronfort et al using different criteria and a novel analysis. They report no difference in outcome from treatment with manipulation vs alternatives. As several additional RCTs had appeared in the interim, the rationale for reissuing the older review without acknowledging new studies was unclear.

 

Acute LBP. There was fair evidence that HVLA has better short-term efficacy than mobilization or diathermy and limited evidence of better short-term efficacy than diathermy, exercise, and ergonomic modifications.

 

Chronic LBP. The HVLA procedure combined with strengthening exercise was as effective for pain relief as nonsteroidal antiinflammatory dugs with exercise. Fair evidence indicated that manipulation is better than physical therapy and home exercise for reducing disability. Fair evidence shows that manipulation improves outcomes more than general medical care or placebo in the short-term and to physical therapy in the long-term. The HVLA procedure had better outcomes than home exercise, transcutaneous�electrical nerve stimulation, traction, exercise, placebo and sham manipulation, or chemonucleolysis for disk herniation.

 

Mixed (Acute and Chronic) LBP. Hurwitz found that HVLA was the same as medical care for pain and disability; adding physical therapy to manipulation did not improve outcomes. Hsieh found no significant value for HVLA over back school or myofascial therapy. A short-term value of manipulation over a pamphlet and no difference between manipulation and McKenzie technique were reported by Cherkin et al. Meade contrasted manipulation and hospital care, finding greater benefit for manipulation over both short-term and long-term. Doran and Newell found that SMT resulted in greater improvement than physical therapy or corsets.

 

Acute LBP

 

Sick List Comparisons. Seferlis found that sick patients listed were significantly improved symptomatically after 1 month regardless of the intervention, including manipulation. Patients were more satisfied and felt that they were provided better explanations about their pain from practitioners who used manual therapy (QS, 62.5). Wand et al examined the effects of sick-listing oneself and noted that a group receiving assessment, advice, and treatment improved better than did a group getting assessment, advice, and who were put on a wait list for a 6-week period. Improvements were observed in disability, general health, quality of life, and mood, though pain and disability were not different at longterm follow-up (QS, 68.75).

 

Physiologic Therapeutic Modality and Exercise. Hurley and colleagues tested the effects of manipulation combined with interferential therapy compared to either modality alone. Their results showed all 3 groups improved function to the same degree, both at 6-month and at 12-month follow-up (QS, 81.25). Using a single-blinded experimental design to compare manipulation to massage and low-level electrostimulation, Godfrey et al found no differences between groups at the 2 to 3-week observation time frame (QS, 19). In the study by Rasmussen, results showed that 94% of the patients treated with manipulation were symptom-free within 14 days, compared to 25% in the group that received short-wave diathermy. Sample size was small, however, and as a result, the study was underpowered (QS, 18). The Danish systematic review examined 12 international sets of guidelines, 12 systematic reviews, and 10 randomized clinical trials on exercise. They found no specific exercises, regardless of type, that were useful for the treatment of acute LBP with the exception of McKenzie maneuvers.

 

Sham and Alternate Manual Method Comparisons. The study of Hadler balanced for effects of provider attention and physical contact with a first effort at a manipulation sham procedure. Patients in the group that entered the trial with greater prolonged illness at the outset were reported to have benefited from the manipulation. Similarly, they improved faster and to a greater degree (QS, 62.5). Hadler demonstrated that there was a benefit for a single session of manipulation compared to a session of mobilization (QS, 69). Erhard reported that the rate of positive response to manual treatment with a hand-heel rocking motion was greater than with extension exercises (QS, 25). Von Buerger examined the use of manipulation for acute LBP, comparing rotational manipulation to soft tissue massage. He found that the manipulation group responded better than the soft tissue group, although the effects occurred mainly in the short-term. The results were also hampered by the nature of the forced multiple choice selections on the data forms (QS, 31). Gemmell compared 2 forms of manipulation for LBP of less than 6 weeks of duration as follows: Meric adjusting (a form of HVLA) and Activator technique (a form of mechanically assisted HVLA). No difference was observed, and both helped to reduce pain intensity (QS, 37.5). MacDonald reported a short-term benefit in disability measures within the first 1 to 2 weeks of starting therapy for the manipulation group that disappeared by 4 weeks in a control group (QS, 38). The work of Hoehler, although containing mixed data for patients with acute and chronic LBP, is included here because a larger proportion of patients with acute LBP were involved in the study. Manipulation patients reported immediate relief more often, but there were no differences between groups at discharge (QS, 25).

 

Medication. Coyer showed that 50% of the manipulation group was symptom-free within 1 week and 87% were discharged symptom-free in 3 weeks, compared to 27% and 60%, respectively, of the control group (bed rest and analgesics) (QS, 37.5). Doran and Newell compared manipulation, physiotherapy, corset, or analgesic medication, using outcomes that examined pain and mobility. There were no differences between groups over time (QS, 25). Waterworth compared manipulation to conservative physiotherapy and 500 mg of diflunisal twice per day for 10 days. Manipulation showed no benefit for the rate of recovery (QS, 62.5). Blomberg compared manipulation to steroid injections and to a control group receiving conventional activating therapy. After 4 months, the manipulation group had less restricted motion in extension, less restriction in side-bending to both sides, less local pain on extension and right sidebending, less radiating pain, and less pain when performing a straight leg raise (QS, 56.25). Bronfort found no outcome differences between chiropractic care compared to medical care at 1 month of treatment, but there were noticeable improvements in the chiropractic group at both 3 and 6-month follow-up (QS, 31).

 

Subacute Back Pain

 

Staying Active. Grunnesjo compared combined effects of manual therapy with advice to stay active to advice alone in patients with acute and subacute LBP. The addition of�manual therapy appeared to reduce pain and disability more effectively than the �stay active� concept alone (QS, 68.75).

 

Physiologic Therapeutic Modality and Exercise. Pope demonstrated that manipulation offered better pain improvement than transcutaneous electrical nerve stimulation (QS 38). Sims-Williams compared manipulation to �physiotherapy.� Results demonstrated a short-term benefit for manipulation on pain and ability to do light work. Differences between groups waned at 3 and 12-month follow-ups (QS, 43.75, 35). Skargren et al compared chiropractic to physiotherapy for patients with LBP who had no treatment for the prior month. No differences in health improvements, costs, or recurrence rates were noted between the 2 groups. However, based on Oswestry scores, chiropractic performed better for patients who had pain for less than 1 week, whereas the physiotherapy seemed to be better for those who had pain for more than 4 weeks (QS, 50).

 

The Danish systematic review examined 12 international sets of guidelines, 12 systematic reviews, and 10 randomized clinical trials on exercise. Results suggested that exercise, in general, benefits patients with subacute back pain. Use of a basic program that can be readily modified to meet individual patient needs is recommended. Issues of strength, endurance, stabilization, and coordination without excessive loading can all be addressed without the use of high-tech equipment. Intensive training consisting of greater than 30 and less than 100 hours of training are most effective.

 

Sham and Alternate Manual Method Comparisons. Hoiriis compared efficacy of chiropractic manipulation to placebo/ sham for subacute LBP. All groups improved on measures of pain, disability, depression, and Global Impression of Severity. Chiropractic manipulation scored better than placebo in reducing pain and Global Impression of Severity scores (QS, 75). Andersson and colleagues compared osteopathic manipulation to standard care to patients with subacute LBP, finding that both groups improved for a 12-week period at about the same rate (QS, 50).

 

Medication Comparisons. In a separate treatment arm of the study of Hoiriis, the relative efficacy of chiropractic manipulation to muscle relaxants for subacute LBP was studied. In all groups, pain, disability, depression, and Global Impression of Severity decreased. Chiropractic manipulation was more effective than muscle relaxants in reducing Global Impression of Severity scores (QS, 75).

 

Chronic LBP

 

Staying Active Comparisons. Aure compared manual therapy to exercise in patients with chronic LBP who were sick listed. Although both groups showed improvements in pain intensity, functional disability, general health, and return to work, the manual therapy group showed significantly greater improvements than did the exercise group for all outcomes. Results were consistent for both the short-term and the longterm (QS, 81.25).

 

Physician Consult/Medical Care/Education. Niemisto compared combined manipulation, stabilization exercise, and physician consultation to consultation alone. The combined intervention was more effective in reducing pain intensity and disability (QS, 81.25). Koes compared general practitioner treatment to manipulation, physiotherapy, and a placebo (detuned ultrasound). Assessments were made at 3, 6, and 12 weeks. The manipulation group had a quicker and larger improvement in physical function compared to the other therapies. Changes in spinal mobility in the groups were small and inconsistent (QS, 68). In a follow-up report, Koes found during subgroup analysis that improvement in pain was greater for manipulation than for other treatments at 12 months when considering patients with chronic conditions, as well as those who were younger than 40 years (QS, 43). Another study by Koes showed that many patients in the nonmanipulation treatment arms had received additional care during follow-up. Yet, improvement in the main complaints and in physical functioning remained better in the manipulation group (QS, 50). Meade observed that chiropractic treatment was more effective than hospital outpatient care, as assessed using the Oswestry Scale (QS, 31). An RCT conducted in Egypt by Rupert compared chiropractic manipulation, after medical and chiropractic evaluation. Pain, forward flexion, active, and passive leg raise all improved to a greater degree in the chiropractic group; however, the description of alternate treatments and outcomes was ambiguous (QS, 50).

 

Triano compared manual therapy to educational programs for chronic LBP. There was greater improvement in pain, function, and activity tolerance in the manipulation group, which continued beyond the 2-week treatment period (QS, 31).

 

Physiologic Therapeutic Modality. A negative trial for manipulation was reported by Gibson (QS, 38). Detuned diathermy was reported to achieve better results over manipulation, although there were baseline differences between groups. Koes studied the effectiveness of manipulation, physiotherapy, treatment by a general practitioner, and a placebo of detuned ultrasound. Assessments were made at 3, 6, and 12 weeks. The manipulation group showed a quicker and better improvement in physical function capacity compared to the other therapies. Flexibility differences between groups were not significant (QS, 68). In a follow-up report, Koes found that a subgroup analysis demonstrated that improvement in pain was greater for those treated with manipulation, both for younger (b40) patients and those with chronic conditions at 12-month follow-up (QS, 43). Despite many patients in the nonmanipulation groups received additional care during follow-up, improvements remained better in the manipulation group than in the physical therapy group (QS, 50). In a separate report by the same group, there were improvements in both the physiotherapy and manual therapy groups with regard to severity of complaints and global perceived effect compared to general practitioner care;�however, the differences between the 2 groups was not significant (QS, 50). Mathews et al found that manipulation hastened recovery from LBP more than the control did.

 

Exercise Modality. Hemilla observed that SMT led to better long-term and short-term disability reduction compared to physical therapy or home exercise (QS, 63). A second article by the same group found that neither bone-setting nor exercise differed significantly from physical therapy for symptom control, though bone-setting was associated with improved lateral and forward-bending of the spine more than exercise (QS, 75). Coxhea reported that HVLA provided better outcomes when compared to exercise, corsets, traction, or no exercise when studied in the short-term (QS, 25). Conversely, Herzog found no differences between manipulation, exercise, and back education in reducing either pain or disability (QS, 6). Aure compared manual therapy to exercise in patients with chronic LBP who were also sick listed. Although both groups showed improvements in pain intensity, functional disability, and general health and returned to work, the manual therapy group showed significantly greater improvements than did the exercise group for all outcomes. This result persisted for both the short-term and the long-term (QS, 81.25). In the article by Niemisto and colleagues, the relative efficacy of combined manipulation, exercise (stabilizing forms), and physician consultation compared to consultation alone was investigated. The combined intervention was more effective in reducing pain intensity and disability (QS, 81.25). The United Kingdom Beam study found that manipulation followed by exercise achieved a moderate benefit at 3 months and a small benefit at 12 months. Likewise, manipulation achieved a small to moderate benefit at 3 months and a small benefit at 12 months. Exercise alone had a small benefit at 3 months but no benefit at 12 months. Lewis et al found improvement occurred when patients were treated by combined manipulation and spinal stabilization exercises vs use of a 10-station exercise class.

 

The Danish systematic review examined 12 international sets of guidelines, 12 systematic reviews, and 10 randomized clinical trials on exercise. Results suggested that exercise, in general, benefits patients with chronic LBP. No clear superior method is known. Use of a basic program that can be readily modified to meet individual patient needs is recommended. Issues of strength, endurance, stabilization, and coordination without excessive loading can all be addressed without the use of high-tech equipment. Intensive training consisting of greater than 30 and less than 100 hours of training are most effective. Patients with severe chronic LBP, including those off work, are treated more effectively with a multidisciplinary rehabilitation program. For post surgical rehabilitation, patients starting 4 to 6 weeks after disk surgery under intensive training receive greater benefit than with light exercise programs.

 

Sham and Alternate Manual Methods. Triano found that SMT produced significantly better results for pain and disability relief for the short-term, than did sham manipulation (QS, 31). Cote found no difference over time or for comparisons within or between the manipulation and mobilization groups (QS, 37.5). The authors posed that failure to observe differences may have been due to low responsiveness to change in the instruments used for algometry, coupled with a small sample size. Hsieh found no significant value for HVLA over back school or myofascial therapy (QS, 63). In the study by Licciardone, a comparison was made between osteopathic manipulation (which includes mobilization and soft tissue procedures as well as HVLA), sham manipulation, and a no-intervention control for patients with chronic LBP. All groups showed improvement. Sham and osteopathic manipulation were associated with greater improvements than seen in the no-manipulation group, but no difference was observed between the sham and manipulation groups (QS, 62.5). Both subjective and objective measures showed greater improvements in the manipulation group compared to a sham control, in a report by Waagen (QS, 44). In the work of Kinalski, manual therapy reduced the time of treatment of patients with LBP and concomitant intervertebral disk lesions. When disk lesions were not advanced, a decreased muscular hypertonia and increased mobility was noted. This article, however, was limited by a poor description of patients and methods (QS, 0).

 

Harrison et al reported a nonrandomized cohort controlled trial of treatment of chronic LBP consisting of 3-point bending traction designed to increase curvature of the lumbar spine. The experimental group received HVLA for pain control during the first 3 weeks (9 treatments). The control group received no treatment. Follow-up at a mean of 11 weeks showed no change in pain or curvature status for controls but a significant increase in curvature and reduction of pain in the experimental group. Average number of treatments to achieve this result was 36. Long-term followup at 17 months showed retention of benefits. No report of relationship between clinical changes and structural change was given.

 

Haas and colleagues examined the dose-response patterns of manipulation for chronic LBP. Patients were randomly allocated to groups receiving 1, 2, 3, or 4 visits per week for 3 weeks, with outcomes recorded for pain intensity and functional disability. A positive and clinically important effect of the number of chiropractic treatments on pain intensity and disability at 4 weeks was associated with the groups receiving the higher rates of care (QS, 62.5). Descarreaux et al extended this work, treating 2 small groups for 4 weeks (3 times per week) after 2 baseline evaluations separated by 4 weeks. One group was then treated every 3 weeks; the other did not. Although both groups had lower Oswestry scores at 12 weeks, at 10 months, the improvement only persisted for the extended SMT group.

 

Medication. Burton and colleagues demonstrated that HVLA led to greater short-term improvements in pain and disability than did chemonucleolysis for managing disk�herniation (QS, 38). Bronfort studied SMT combined with exercise vs a combination of nonsteroidal antiinflammatory drugs and exercise. Similar results were obtained for both groups (QS, 81). Forceful manipulation coupled with sclerosant therapy (injection of a proliferant solution composed of dextrose-glycerine-phenol) was compared to lower force manipulation combined with saline injections, in a study by Ongley. The group receiving forceful manipulation with sclerosant fared better than the alternate group, but effects cannot be separated between the manual procedure and the sclerosant (QS, 87.5). Giles and Muller compared HVLA procedures to medication and acupuncture. Manipulation showed greater improvement in frequency of back pain, pain scores, Oswestry, and SF-36 compared to the other 2 interventions. Improvements lasted for 1 year. Weaknesses of the study were use of a compliers-only analysis as intention to treat for the Oswestry, and Visual Analogue Scale (VAS) was not significant.

 

Sciatica/Radicular/Radiating Leg Pain

 

Staying Active/Bed Rest. Postacchini studied a mixed group of patients with LBP, with and without radiating leg pain. Patients could be classified as acute or chronic and were evaluated at 3 weeks, 2 months, and 6 months postonset. Treatments included manipulation, drug therapy, physiotherapy, placebo, and bed rest. Acute back pain without radiation and chronic back pain responded well to manipulation; however, in none of the other groups did manipulation fare as well as other interventions (QS, 6).

 

Physician Consult/Medical Care/Education. Arkuszewski looked at patients with lumbosacral pain or sciatica. One group received drugs, physiotherapy, and manual examination, whereas the second added manipulation. The group receiving manipulation had a shorter treatment time and a more marked improvement. At 6-month follow-up, the manipulation group showed better neuromotor system function and a better ability to continue employment. Disability was lower in the manipulation group (QS, 18.75).

 

Physiologic Therapeutic Modality. Physiotherapy combined with manual manipulation and medication was examined by Arkuszewski, in contrast to the same scheme with manipulation added, as noted above. Outcomes from manipulation were better for neurologic and motor function as well as disability (QS, 18.75). Postacchini looked at patients with acute or chronic symptoms evaluated at 3 weeks, 2 months, and 6 months postonset. Manipulation was not as effective for managing the patients with radiating leg pain as the other treatment arms (QS, 6). Mathews and colleagues examined multiple treatments including manipulation, traction, sclerosant use, and epidural injections for back pain with sciatica. For patients with LBP and restricted straight leg raise test, manipulation conferred highly significant relief, more so than alternate interventions (QS, 19). Coxhead et al included among their subjects patients who had radiating pain at least to the buttocks. Interventions included traction, manipulation, exercise, and corset, using a factorial design. After 4 weeks of care, manipulation showed a significant degree of benefit on one of the scales used to assess progress. There were no real differences between groups at 4 months and 16 months posttherapy, however (QS, 25).

 

Exercise Modality. In the case of LBP after laminectomy, Timm reported that exercises conferred benefit both for pain relief and cost-effectiveness (QS, 25). Manipulation had only a small influence on improvement of either symptoms or function (QS, 25). In the study by Coxhead et al, radiating pain to at least the buttocks was better after 4 weeks of care for manipulation, in contrast to other treatments that disappeared 4 months and 16 months posttherapy (QS, 25).

 

Sham and Alternate Manual Method. Siehl looked at the use of manipulation under general anesthesia for patients with LBP and unilateral or bilateral radiating leg pain. Only temporary clinical improvement was noted when traditional electromyographic evidence of nerve root involvement was present. With negative electromyography, manipulation was reported to provide lasting improvement (QS, 31.25) Santilli and colleagues compared HVLA to soft tissue pressing without any sudden thrust in patients with moderate acute back and leg pain. The HVLA procedures were significantly more effective in reducing pain, reaching a pain-free status, and the total number of days with pain. Clinically significant differences were noted. The total number of treatment sessions was capped at 20 on a dosage of 5 times per week with care depending on pain relief. Follow-up showed relief persisting through 6 months.

 

Medication. Mixed acute and chronic back pain with radiation treated in a study using multiple treatment arms were evaluated at 3 weeks, 2 months, and 6 months postonset by the group of Postacchini. Medication management fared better than did manipulation when radiating leg pain was present (QS, 6). Conversely, for the work of Mathews and colleagues, the group of patients with LBP and limited straight leg raise test responded more to manipulation than to epidural steroid or sclerosants (QS, 19).

 

Disk Herniation

 

Nwuga studied 51 subjects who were having a diagnosis of prolapsed intervertebral disk and who had been referred for physical therapy. Manipulation was reported to be superior to conventional therapy (QS, 12.5). Zylbergold found that there were no statistical differences between 3 treatments�lumbar flexion exercises, home care, and manipulation. Short-term follow-up and a small sample size were posed by the author as a basis for failing to reject the null hypothesis (QS, 38).

 

Exercise

 

Exercise is one of the most well-studied forms of treatment of low back disorders. There are many different approaches to�exercise. For this report, it is important only to differentiate multidisciplinary rehabilitation. These programs are designed for patients with especially chronic condition with significant psychosocial problems. They involve trunk exercise, functional task training including work simulation/vocational training, and psychological counseling.

 

Image of a healthcare professional helping a patient perform exercises for low back pain and sciatica.

 

In a recent Cochrane review on exercise for the treatment of nonspecific LBP (QS, 82), effectiveness of exercise therapy in patients classified as acute, subacute, and chronic was compared to no treatment and alternate treatments. Outcomes included the assessment of pain, function, return to work, absenteeism, and/or global improvements. In the review, 61 trials met the inclusion criteria, most of which dealt with chronic (n = 43), whereas smaller numbers addressed acute (n = 11) and subacute (n = 6) pain. The general conclusions were as follows:

 

  • exercise is not effective as a treatment of acute LBP,
  • evidence that exercise was effective in chronic populations relative to comparisons made at follow-up periods,
  • mean improvements of 13.3 points for pain and 6.9 points for function were observed, and
  • there is some evidence that graded-activity exercise is effective for subacute LBP but only in the occupational setting

 

The review examined population and intervention characteristics, as well as outcomes to reach its conclusions. Extracting data on return to work, absenteeism, and global improvement proved so difficult that only pain and function could be quantitatively described.

 

Eight studies scored positively on key validity criteria. With regard to clinical relevance, many of the trials presented inadequate information, with 90% reporting the study population but only 54% adequately describing the exercise intervention. Relevant outcomes were reported in 70% of the trials.

 

Exercise for Acute LBP. Of the 11 trials (total n = 1192), 10 had nonexercise comparison groups. The trials presented conflicting evidence. Eight low-quality trials showed no differences between exercise and usual care or no treatment. Pooled data showed that there was no difference in shortterm pain relief between exercise and no treatment, no difference in early follow-up for pain when compared to other interventions, and no positive effect of exercise on functional outcomes.

 

Subacute LBP. In 6 studies (total n = 881), 7 exercise groups had a nonexercise comparison group. The trials offered mixed results with regard to evidence of effectiveness, with fair evidence of effectiveness for a graded-exercise activity program as the only notable finding. Pooled data did not show evidence to either support or refute the use of exercise for subacute LBP, either for decreasing pain or improving function.

 

Chronic LBP. There were 43 trials included in this group (total n = 3907). Thirty-three of the studies had nonexercise comparison groups. Exercise was at least as effective as other conservative interventions for LBP, and 2 high-quality studies and 9 lower-quality studies found exercise to be more effective. These studies used individualized exercise programs, focusing mainly on strengthening or trunk stabilization. There were 14 trials that found no difference between exercise and other conservative interventions; of these, 2 were rated highly and 12 rated lower. Pooling the data showed a mean improvement of 10.2 (95% confidence interval [CI], 1.31-19.09) points on a 100-mm pain scale for exercise compared to no treatment and 5.93 (95% CI, 2.21- 9.65) points compared to other conservative treatments. Functional outcomes also showed improvements as follows: 3.0 points at earliest follow-up compared to no treatment (95% CI, ?0.53 to 6.48) and 2.37 points (95% CI, 1.04-3.94) compared to other conservative treatments.

 

Indirect subgroup analysis found that trials examining health care study populations had higher mean improvements in pain and physical functioning compared to their comparison groups or to trials set in occupational or general populations.

 

The review authors offered the following conclusions:

 

  1. In acute LBP, exercises are not more effective than other conservative interventions. Meta-analysis showed no advantage over no treatment of pain and functional outcomes over the short or long-term.
  2. There is fair evidence of effectiveness of a gradedactivity exercise program in subacute LBP in occupational settings. The effectiveness for other types of exercise therapy in other populations is unclear.
  3. In chronic LBP, there is good evidence that exercise is at least as effective as other conservative treatments. Individually designed strengthening or stabilizing programs appear to be effective in health care settings. Meta-analysis found functional outcomes significantly improved; however, the effects were very small, with a less than 3-point (of 100) difference between the exercise and comparison groups at earliest follow-up. Pain outcomes were also significantly improved in groups receiving exercises relative to other comparisons, with a mean of approximately 7 points. Effects were similar over longer follow-up, though confidence intervals increased. Mean improvements in pain and functioning may be clinically meaningful in studies from health care populations in which improvements were significantly greater than those observed in studies from general or mixed populations.

 

The Danish group review of exercise was able to identify 5 systematic reviews and 12 guidelines that discussed exercise for acute LBP, 1 systematic review and 12 guidelines for subacute, and 7 systematic reviews and 11 guidelines for chronic. Furthermore, they identified 1 systematic review that selectively evaluated for postsurgical�cases. Conclusions were essentially the same as the Cochrane review, with the exceptions that there was limited support for McKenzie maneuvers for patients with acute condition and for intensive rehabilitation programs for 4 to 6 weeks after disk surgery over light exercise programs.

 

Natural and Treatment History for LBP

 

Most studies have demonstrated that nearly half of LBP will improve within 1 week, whereas nearly 90% of it will be gone by 12 weeks. Even more, Dixon demonstrated that perhaps as much as 90% of LBP will resolve on its own, without any intervention whatsoever. Von Korff demonstrated that a significant number of patients with acute LBP will have persistent pain if they are observed up to 2 years.

 

Phillips found that nearly 4 of 10 people will have LBP after an episode at 6 months from onset, even if the original pain has disappeared because more than 6 in 10 will have at least 1 relapse during the first year after an episode. These initial relapses occur within 8 weeks most commonly and may reoccur over time, though in decreasing percentages.

 

Workers’ compensation injury patients were observed for 1 year to examine symptom severity and work status. Half of those studied lost no work time in the first month after injury, but 30% did lose time from work due to their injury over the course of 1 year. Of those who missed work in the first month due to their injury and had already been able to return to work, nearly 20% had absence later in that same year. This implies that assessing return to work at 1 month after injury will fail to give an honest depiction of the chronic, episodic nature of LBP. Although many patients have returned to work, they will later experience continuing problems and work-related absences. Impairment present at more than 12 weeks postinjury may be far higher than what has been previously reported in the literature, where rates of 10% are common. In fact, the rates may go up to 3 to 4 times higher.

 

In a study by Schiotzz-Christensen and colleagues, the following was noted. In relation to sick leave, LBP has a favorable prognosis, with a 50% return to work within the first 8 days and only 2% on sick leave after 1 year. However, 15% had been on sick leave during the following year and about half continued to complain of discomfort. This suggested that an acute episode of LBP significant enough to cause the patient to seek a visit to a general practitioner is followed by a longer period of low-grade disability than previously reported. Also, even for those who returned to work, up to 16% indicated that they were not functionally improved. In another study looking at outcomes after 4 weeks after initial diagnosis and treatment, only 28% of patients did not experience any pain. More strikingly, the persistence of pain differed between groups that had radiating pain and those that did not, with 65% of the former feeling improvement at 4 weeks, vs 82% of the latter. The general findings from this study differ from others in that 72% of patients still experienced pain 4 weeks after initial diagnosis.

 

Hestbaek and colleagues reviewed a number of articles in a systematic review. The results showed that the reported proportion of patients who still experienced pain after 12 months after onset was 62% on average, with 16% sick-listed 6 months after onset, and with 60% experiencing relapse of work absence. Also, they found that the mean reported prevalence of LBP in patients who had past episodes of LBP was 56%, compared to just 22% for those who had no such history. Croft and colleagues performed a prospective study looking at the outcomes of LBP in general practice, finding that 90% of patients with LBP in primary care had stopped consulting with symptoms within 3 months; however, most were still experiencing LBP and disability 1 year after the initial visit. Only 25% had fully recovered within that same year.

 

There are even different results in the study by Wahlgren et al. Here, most patients continued to experience pain at both 6 and 12 months (78% and 72%, respectively). Only 20% of the sample had fully recovered by 6 months and only 22% by 12 months.

 

Von Korff has provided a lengthy list of data he considers relevant to assessing the clinical course of back pain as follows: age, sex, race/ethnicity, years of education, occupation, change in occupation, employment status, disability insurance status, litigation status, recency/age at first onset of back pain, recency/age when care was sought, recency of back pain episode, duration of current/most recent episode of back pain, number of back pain days, current pain intensity, average pain intensity, worst pain intensity, ratings of interference with activities, activity limitation days, clinical diagnosis for this episode, bed rest days, work loss days, recency of back pain flare-up, and duration of the most recent flare-up.

 

In a practice-based observational study by Haas et al of almost 3000 patients with acute and chronic condition treated by chiropractors and primary care medical doctors, pain was noted in patients with acute and chronic condition up to 48 months after enrollment. At 36 months, 45% to 75% of patients reported at least 30 days of pain in the prior year, and 19% to 27% of patients with chronic condition recalled daily pain over the previous year.

 

The variability noted in these and many other studies can be explained in part by the difficulty in making an adequate diagnosis, by the different classification schemes used in classifying LBP, by the different outcome tools used in each study and by many other factors. It also points up the extreme difficulty in getting a handle on the day-to-day reality for those who have LBP.

 

Common Markers and Rating Complexity for LBP

 

What Are the Relevant Benchmarks for Evaluating Process of Care?. One benchmark is described above, that being natural history. Complexity and risk stratification are important, as�are cost issues; however, cost-effectiveness is beyond the scope of this report.

 

It is understood that patients with uncomplicated LBP improve faster than those with various complications, the most notable of which is radiating pain. Many factors may influence the course of back pain, including comorbidity, ergonomic factors, age, the level of fitness of the patient, environmental factors, and psychosocial factors. The latter is receiving a great deal of attention in the literature, though as noted elsewhere in this book, such consideration may not be justified. Any of these factors, alone or in combination, may hamper or retard the recovery period after injury.

 

It seems that biomechanical factors play an important role in the incidence of first-time episodes of LBP and its attendant problems such as work loss; psychosocial factors come into play more in subsequent episodes of LBP. The biomechanical factors can lead to tissue tearing, which then create pain and limited ability for years to follow. This tissue damage cannot be seen on standard imaging and may only be apparent upon dissection or surgery.

 

Risk factors for LBP include the following:

 

  • age, sex, severity of symptoms;
  • increased spinal flexibility, decreased muscle endurance;
  • prior recent injury or surgery;
  • abnormal joint motion or decreased body mechanics;
  • prolonged static posture or poor motor control;
  • work-related such as vehicle operation, sustained loads, materials handling;
  • employment history and satisfaction; and
  • wage status.

 

IJzelenberg and Burdorf investigated whether demographic, work-related physical, or psychosocial risk factors involved in the occurrence of musculoskeletal conditions determine subsequent health care use and sick leave. They found that within 6 months, nearly one third of industrial workers with LBP (or neck and upper extremity problems) had a recurrence of sick leave for that same problem and a 40% recurrence of health care use. Work-related factors associated with musculoskeletal symptoms were similar to those associated with health care use and sick leave; but, for LBP, older age and living alone strongly determined whether patients with these problems took any sick leave. The 12- month prevalence of LBP was 52%, and of those with symptoms at baseline, 68% had a recurrence of the LBP. Jarvik and colleagues add depression as an important predictor of new LBP. They found the use of MRI to be a less important predictor of LBP than depression.

 

What Are the Relevant Outcome Measures?. The Clinical Practice Guidelines formulated by the Canadian Chiropractic Association and the Canadian Federation of Chiropractic Regulatory Boards note that there are a number of outcomes that may be used to demonstrate change as a result of treatment. These should be both reliable and valid. According to the Canadian guidelines, appropriate standards are useful in chiropractic practice because they are able to perform the following:

 

  • consistently evaluate the effects of care over time;
  • help indicate the point of maximum therapeutic improvement;
  • uncover problems related to care such as noncompliance;
  • document improvement to the patient, doctor, and third parties;
  • suggest modifications of the goals of treatment if necessary;
  • quantify the clinical experience of the doctor;
  • justify the type, dose, and duration of care;
  • help provide a database for research; and
  • assist in establishing standards of treatment of specific conditions.

 

The broad general classes of outcomes include functional outcomes, patient perception outcomes, physiologic outcomes, general health assessments, and subluxation syndrome outcomes. This chapter addresses only functional and patient perception outcomes assessed by questionnaires and functional outcomes assessed by manual procedures.

 

Functional Outcomes. These are outcomes that measure the patient’s limitations in going about his or her normal daily activities. What is being looked at is the effect of a condition or disorder on the patient (ie, LBP, for which a specific diagnosis may not be present or possible) and its outcome of care. Many such outcome tools exist. Some of the better known include the following:

 

  • Roland Morris Disability Questionnaire,
  • Oswestry Disability Questionnaire,
  • Pain Disability Index,
  • Neck Disability Index,
  • Waddell Disability Index, and
  • Million Disability Questionnaire.

 

These are only some of the existing tools for assessing function.

 

In the existing RCT literature for LBP, functional outcomes have been shown to be the outcome that demonstrates the greatest change and improvement with SMT. Activities of daily living, along with patient selfreporting of pain, were the 2 most notable outcomes to show such improvement. Other outcomes fared less well, including trunk range of motion (ROM) and straight leg raise.

 

In the chiropractic literature, the outcome inventories used most frequently for LBP are the Roland Morris Disability Questionnaire and the Oswestry Questionnaire. In a study in 1992, Hsieh found that both tools provided consistent results over the course of his trial, although the results from the 2 questionnaires differed.

 

Patient Perception Outcomes. Another important set of outcomes involve patient perception of pain and their satisfaction with care. The first involves measuring changes in pain perception over time of its intensity, duration, and frequency. There are a number of valid tools available that can accomplish this, including the following:

 

Visual analog scale�this is a 10-cm line that has pain descriptions noted at both ends of that line representing no pain to intolerable pain; the patient is asked to mark a point on that line that reflects their perceived pain intensity. There are a number of variants for this outcome, including the Numerical Rating Scale (where the patient provides a number between 0 and 10 to represent the amount of pain they have) and the use of pain levels from 0 to 10 depicted pictorially in boxes, which the patient may check. All of these appear to be equally reliable, but for ease of use, either the standard VAS or Numerical Rating Scale is commonly used.

 

Pain diary�these may be used to help monitor a variety of different pain variables (for example, frequency, which the VAS cannot measure). Different forms may be used to collect this information, but it is typically completed on a daily basis.

 

McGill Pain Questionnaire�this scale helps quantify several psychologic components of pain as follows: cognitive-evaluative, motivational-affective, and sensory discriminative. In this instrument, there are 20 categories of words that describe the quality of pain. From the results, 6 different pain variables can be determined.

 

All of the above instruments have been used at various times to monitor the progress of treatment of back pain with SMT.

 

Patient satisfaction addresses both the effectiveness of care as well as the method of receiving that care. There are numerous methods of assessing patient satisfaction, and not all of them were designed to be specifically used for LBP or for manipulation. However, Deyo did develop one for use with LBP. His instrument examines the effectiveness of care, information, and caring. There is also the Patient Satisfaction Questionnaire, which assesses 8 separate indices (such as efficacy/outcomes or professional skill, for example). Cherkin noted that the Visit Specific Satisfaction Questionnaire can be used for chiropractic outcome assessment.

 

Recent work has shown that patient confidence and satisfaction with care are related to outcomes. Seferlis found that patients were more satisfied and felt that they were provided better explanations about their pain from practitioners who used manual therapy. Regardless of treatment, highly satisfied patients at 4 weeks were more likely than less satisfied patients to perceive greater pain improvement throughout 18-month follow-up in a study by Hurwitz et al. Goldstein and Morgenstern found a weak association between treatment confidence in the therapy they received and greater improvement in LBP. A frequent assertion is that benefits observed from application of manipulation methods are a result of physician attention and touching. Studies directly testing this hypothesis were conducted by Hadler et al in patients with acute condition and by Triano et al in patients with subacute and chronic condition. Both studies compared manipulation to a placebo control. In the study of Hadler, the control balanced for provider time attention and frequency, whereas Triano et al also added an education program with home exercise recommendations. In both cases, results demonstrated that although attention given to patients was associated with improvement over time, patients receiving manipulation procedures improved more quickly.

 

General Health Outcome Measures. This has traditionally been a difficult outcome to effectively measure but a number of more recent instruments are demonstrating that it can be done reliably. The 2 major instruments for doing so are the Sickness Impact Profile and the SF-36. The first assesses dimensions such as mobility, ambulation, rest, work, social interaction, and so on; the second looks primarily at well being, functional status, and overall health, as well as 8 other health concepts, to ultimately determine 8 indices that can be used to determine overall health status. Items here include physical functioning, social functioning, mental health, and others. This tool has been used in many settings and has also been adapted into shorter forms as well.

 

Physiologic Outcome Measures. The chiropractic profession has a number of physiologic outcomes that are used with regard to the patient care decision-making process. These include such procedures as ROM testing, muscle function testing, palpation, radiography, and other less common procedures (leg length analysis, thermography, and others). This chapter addresses only the physiologic outcomes assessed manually.

 

Range of Motion. This examination procedure is used by nearly every chiropractor and is used to assess impairment because it is related to spinal function. It is possible to use ROM as a means to monitor improvement in function over time and, therefore, improvement as it relates to the use of SMT. One can assess regional and global lumbar motion, for example, and use that as one marker for improvement.

 

Range of motion can be measured via a number of different means. One can use standard goniometers, inclinometers, and more sophisticated tools that require the use of specialized equipment and computers. When doing so, it is important to consider the reliability of each individual method. A number of studies have assessed various devices as follows:

 

  • Zachman found the use of the rangiometer moderately reliable,
  • Nansel found that using 5 repeated measures of cervical spine motion with an inclinometer to be reliable,
  • Liebenson found that the modified Schrober technique, along with inclinometers and flexible spinal rulers had the best support from the literature,
  • Triano and Schultz found that ROM for the trunk, along with trunk strength ratios and myoelectrical activity, was good indicator for LBP disability, and
  • a number of studies found that the kinematic measurement of ROM for spinal mobility is reliable.

 

Muscle Function. Evaluating muscle function may be done using an automated system or by manual means. Although manual muscle testing has been a common diagnostic practice within the chiropractic profession, there are few studies demonstrating clinical reliability for the procedure, and these are not considered to be of high quality.

 

Automated systems are more reliable and are capable of assessing muscle parameters such as strength, power, endurance, and work, as well as assess different modes of muscle contraction (isotonic, isometric, isokinetic). Hsieh found that a patient-initiated method worked well for specific muscles, and other studies have shown the dynamometer to have good reliability.

 

Leg Length Inequality. Very few studies of leg length have shown acceptable levels of reliability. The best methods for assessing reliability and validity of leg length involve radiographic means and are therefore subject to exposure to ionizing radiation. Finally, the procedure has not been studied as to validity, making the use of this as an outcome questionable.

 

Soft Tissue Compliance. Compliance is assessed by both manual and mechanical means, using the hand alone or using a device such as an algometer. By assessing compliance, the chiropractor is looking to assess muscle tone.

 

Early tests of compliance by Lawson demonstrated good reliability. Fisher found increases in tissue compliance with subjects involved in physical therapy. Waldorf found that prone segmental tissue compliance had good test/retest variation of less than 10%.

 

Pain tolerance assessed using these means has been found reliable, and Vernon found it was a useful measure in assessing the cervical paraspinal musculature after adjusting. The guidelines group from the Canadian Chiropractic Association and the Canadian Federation of Chiropractic Regulatory Boards concluded that �the assessments are safe and inexpensive and appear to be responsive to conditions and treatments commonly seen in chiropractic practice.�

 

Group Portrait Of Workers In Medical Professions

 

Conclusion

 

Existing research evidence regarding the usefulness of spinal adjusting/manipulation/mobilization indicates the following:

 

  1. As much or more evidence exists for the use of SMT to reduce symptoms and improve function in patients with chronic LBP as for use in acute and subacute LBP.
  2. Use of exercise in conjunction with manipulation is likely to speed and improve outcomes as well as minimize episodic recurrence.
  3. There was less evidence for the use of manipulation for patients with LBP and radiating leg pain, sciatica, or radiculopathy.
  4. Cases with high severity of symptoms may benefit by referral for comanagement of symptomswith medication.
  5. There was little evidence for the use of manipulation for other conditions affecting the low back and very few articles to support a higher rating.

 

Exercise and reassurance have been shown to be of value primarily in chronic LBP and low back problems associated with radicular symptoms. A number of standardized, validated tools are available to help capture meaningful clinical improvement over the course of low back care. Typically, functional improvement (as opposed to simple reported reduction in pain levels) may be clinically meaningful for monitoring responses to care. The literature reviewed remains relatively limited in predicting responses to care, tailoring specific combinations of intervention regimens (although the combination of manipulation and exercise may be better than exercise alone), or formulating condition-specific recommendations for frequency and�duration of interventions. Table 2 summarizes the recommendations of the team, based on the review of the evidence.

 

Table 2 Summary of Conclusions

 

Practical Applications

 

  • Evidence exists for the use of spinal manipulation to reduce symptoms and improve function in patients with chronic, acute, and subacute LBP.
  • Exercise in conjunction with manipulation is likely to speed and improve outcomes and minimize recurrence

 

In conclusion,�more evidence-based research studies have become available regarding the effectiveness of chiropractic care for low back pain and sciatica. The article also demonstrated that exercise should be used together with chiropractic to help speed up the rehabilitation process and further improve recovery. In most cases, chiropractic care can be used for the management of low back pain and sciatica, without the need for surgical interventions. However, if surgery is required to achieve recovery, a chiropractor may refer the patient to the next best healthcare professional. Information referenced from the National Center for Biotechnology Information (NCBI). The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

 

Curated by Dr. Alex Jimenez

 

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Additional Topics: Sciatica

 

Sciatica is referred to as a collection of symptoms rather than a single type of injury or condition. The symptoms are characterized as radiating pain, numbness and tingling sensations from the sciatic nerve in the lower back, down the buttocks and thighs and through one or both legs and into the feet. Sciatica is commonly the result of irritation, inflammation or compression of the largest nerve in the human body, generally due to a herniated disc or bone spur.

 

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IMPORTANT TOPIC: EXTRA EXTRA: Treating Sciatica Pain

 

 

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Close Accordion
Effectiveness of Exercise: Neck, Hip & Knee Injuries from Auto Accidents

Effectiveness of Exercise: Neck, Hip & Knee Injuries from Auto Accidents

Based on statistical findings, approximately more than three million people in the United States are injured in an automobile accident every year. In fact, auto accidents are considered to be one of the most common causes for trauma or injury. Neck injuries, such as whiplash, frequently occur due to the sudden back-and-forth movement of the head and neck from the force of the impact. The same mechanism of injury can also cause soft tissue injuries in other parts of the body, including the lower back as well as the lower extremities. Neck, hip, thigh and knee injuries are common types of injuries resulting from auto accidents.

 

Abstract

 

  • Objective: The purpose of this systematic review was to determine the effectiveness of exercise for the management of soft tissue injuries of the hip, thigh, and knee.
  • Methods: We conducted a systematic review and searched MEDLINE, EMBASE, PsycINFO, the Cochrane Central Register of Controlled Trials, and CINAHL Plus with Full Text from January 1, 1990, to April 8, 2015, for randomized controlled trials (RCTs), cohort studies, and case-control studies evaluating the effect of exercise on pain intensity, self-rated recovery, functional recovery, health-related quality of life, psychological outcomes, and adverse events. Random pairs of independent reviewers screened titles and abstracts and assessed risk of bias using the Scottish Intercollegiate Guidelines Network criteria. Best evidence synthesis methodology was used.
  • Results: We screened 9494 citations. Eight RCTs were critically appraised, and 3 had low risk of bias and were included in our synthesis. One RCT found statistically significant improvements in pain and function favoring clinicbased progressive combined exercises over a �wait and see� approach for patellofemoral pain syndrome. A second RCT suggests that supervised closed kinetic chain exercises may lead to greater symptom improvement than open chain exercises for patellofemoral pain syndrome. One RCT suggests that clinic-based group exercises may be more effective than multimodal physiotherapy in male athletes with persistent groin pain.
  • Conclusion: We found limited high-quality evidence to support the use of exercise for the management of soft tissue injuries of the lower extremity. The evidence suggests that clinic-based exercise programs may benefit patients with patellofemoral pain syndrome and persistent groin pain. Further high-quality research is needed. (J Manipulative Physiol Ther 2016;39:110-120.e1)
  • Key Indexing Terms: Knee; Knee Injuries; Hip; Hip Injuries; Thigh; Thigh Pain; Exercise

 

Soft tissue injuries of the lower limb are common. In the United States, 36% of all injuries presenting to emergency departments are sprains and/or strains of the lower extremity. Among Ontario workers, approximately 19% of all approved lost time compensation claims are related to lower extremity injuries. Moreover, 27.5% of Saskatchewan adults injured in a traffic collision report pain in the lower extremity. Soft tissue injuries of the hip, thigh, and knee are costly and place a significant economic and disability burden on workplaces and compensation systems. According to the US Department of Labor Bureau of Statistics, the median time off work for lower extremity injuries was 12 days in 2013. Knee injuries were associated with the longest work absenteeism (median, 16 days).

 

Most soft tissue injuries of the lower limb are managed conservatively, and exercise is commonly used to treat these injuries. Exercise aims to promote good physical health and restore normal function of the joints and surrounding soft tissues through concepts which include range of motion, stretching, strengthening, endurance, agility, and proprioceptive exercises. However, the evidence about the effectiveness of exercise for managing soft tissue injuries of the lower limb is unclear.

 

Previous systematic reviews have investigated the effectiveness of exercise for the management of soft tissue injuries of the lower extremity. Reviews suggest that exercise is effective for the management of patellofemoral pain syndrome and groin injuries but not for patellar tendinopathy. To our knowledge, the only review reporting on the effectiveness of exercise for acute hamstring injuries found little evidence to support stretching, agility, and trunk stability exercises.

 

Image of trainer demonstrating rehabilitation exercises.

 

The purpose of our systematic review was to investigate the effectiveness of exercise compared to other interventions, placebo/sham interventions, or no intervention in improving self-rated recovery, functional recovery (eg, return to activities, work, or school), or clinical outcomes (eg, pain, health-related quality of life, depression) of patients with soft tissue injuries of the hip, thigh, and knee.

 

Methods

 

Registration

 

This systematic review protocol was registered with the International Prospective Register of Systematic Reviews on March 28, 2014 (CRD42014009140).

 

Eligibility Criteria

 

Population. Our review targeted studies of adults (?18 years) and/or children with soft tissue injuries of the hip, thigh, or knee. Soft tissue injuries include but are not limited to grade I to II sprains/strains; tendonitis; tendinopathy; tendinosis; patellofemoral pain (syndrome); iliotibial band syndrome; nonspecific hip, thigh, or knee pain (excluding major pathology); and other soft tissue injuries as informed by available evidence. We defined the grades of sprains and strains according to the classification proposed by the American Academy of Orthopaedic Surgeons (Tables 1 and 2). Affected soft tissues in the hip include the supporting ligaments and muscles crossing the hip joint into the thigh (including the hamstrings, quadriceps, and adductor muscle groups). Soft tissues of the knee include the supporting intra-articular and extra-articular ligaments and muscles crossing the knee joint from the thigh including the patellar tendon. We excluded studies of grade III sprains or strains, acetabular labral tears, meniscal tears, osteoarthritis, fractures, dislocations, and systemic diseases (eg, infection, neoplasm, inflammatory disorders).

 

Table 1 Case Definition of Sprains

 

Table 2 Case Definition of Strains

 

Interventions. We restricted our review to studies that tested the isolated effect of exercise (ie, not part of a multimodal program of care). We defined exercise as any series of movements aimed at training or developing the body by routine practice or as physical training to promote good physical health.

 

Comparison Groups. We included studies that compared 1 or more exercise interventions to one another or one exercise intervention to other interventions, wait list, placebo/sham interventions, or no intervention.

 

Outcomes. To be eligible, studies had to include one of the following outcomes: (1) self-rated recovery; (2) functional recovery (eg, disability, return to activities, work, school, or sport); (3) pain intensity; (4) health-related quality of life; (5) psychological outcomes such as depression or fear; and (6) adverse events.

 

Study Characteristics. Eligible studies met the following criteria: (1) English language; (2) studies published between January 1, 1990, and April 8, 2015; (3) randomized controlled trials (RCTs), cohort studies, or case-control studies which are designed to assess the effectiveness and safety of interventions; and (4) included an inception cohort of a minimum of 30 participants per treatment arm with the specified condition for RCTs or 100 participants per group with the specified condition in cohort studies or case-control studies. Studies including other grades of sprains or strains in the hip, thigh, or knee had to provide separate results for participants with grades I or II sprains/strains to be included.

 

We excluded studies with the following characteristics: (1) letters, editorials, commentaries, unpublished manuscripts, dissertations, government reports, books and book chapters, conference proceedings, meeting abstracts, lectures and addresses, consensus development statements, or guideline statements; (2) study designs including pilot studies, cross-sectional studies, case reports, case series, qualitative studies, narrative reviews, systematic reviews (with or without meta-analyses), clinical practice guidelines, biomechanical studies, laboratory studies, and studies not reporting on methodology; (3) cadaveric or animal studies; and (4) studies on patients with severe injuries (eg, grade III sprains/strains, fractures, dislocations, full ruptures, infections, malignancy, osteoarthritis, and systemic disease).

 

Information Sources

 

We developed our search strategy with a health sciences librarian (Appendix 1). The Peer Review of Electronic Search Strategies (PRESS) Checklist was used by a second librarian to review the search strategy for completeness and accuracy. We searched MEDLINE and EMBASE, considered to be the major biomedical databases, and PsycINFO, for psychological literature through Ovid Technologies, Inc; CINAHL Plus with Full Text for nursing and allied health literature through EBSCOhost; and the Cochrane Central Register of Controlled Trials through Ovid Technologies, Inc, for any studies not captured by the other databases. The search strategy was first developed in MEDLINE and subsequently adapted to the other bibliographic databases. Our search strategies combined controlled vocabulary relevant to each database (eg, MeSH for MEDLINE) and text words relevant to exercise and soft tissue injuries of the hip, thigh, or knee including grade I to II sprain or strain injuries (Appendix 1). We also hand searched the reference lists of previous systematic reviews for any additional relevant studies.

 

Study Selection

 

A 2-phase screening process was used to select eligible studies. Random pairs of independent reviewers screened citation titles and abstracts to determine the eligibility of studies in phase 1. Screening resulted in studies being classified as relevant, possibly relevant, or irrelevant. In phase 2, the same pairs of reviewers independently screened the possibly relevant studies to determine eligibility. Reviewers met to reach consensus on the eligibility of studies and resolve disagreements. A third reviewer was used if consensus could not be reached.

 

Image of older patient engaging in upper rehabilitation exercises with a personal trainer.

 

Assessment of Risk of Bias

 

Independent reviewers were randomly paired to critically appraise the internal validity of eligible studies using the Scottish Intercollegiate Guidelines Network (SIGN) criteria. The impact of selection bias, information bias, and confounding on the results of a study was qualitatively evaluated using the SIGN criteria. These criteria were used to guide reviewers in making an informed overall judgment on the internal validity of studies. This methodology has been previously described. A quantitative score or a cutoff point to determine the internal validity of studies was not used for this review.

 

The SIGN criteria for RCTs were used to critically appraise the following methodological aspects: (1) clarity of the research question, (2) randomization method, (3) concealment of treatment allocation, (4) blinding of treatment and outcomes, (5) similarity of baseline�characteristics between/among treatment arms, (6) cointervention contamination, (7) validity and reliability of outcome measures, (8) follow-up rates, (9) analysis according to intention-to-treat principles, and (10) comparability of results across study sites (where applicable). Consensus was reached through reviewer discussion. Disagreements were resolved by an independent third reviewer when consensus could not be reached. The risk of bias of each appraised study was also reviewed by a senior epidemiologist (PC). Authors were contacted when additional information was needed to complete the critical appraisal. Only studies with low risk of bias were included in our evidence synthesis.

 

Data Extraction and Synthesis of Results

 

Data were extracted from studies (DS) with low risk of bias to create evidence tables. A second reviewer independently checked the extracted data. We stratified results based on the duration of the condition (recent onset [0-3 months], persistent [N3 months], or variable duration [recent onset and persistent combined]).

 

We used standardized measures to determine the clinical importance of changes reported in each trial for common outcome measures. These include a between-group difference of 2/10 points on the Numeric Rating Scale (NRS), 2/10 cm difference on the Visual Analog Scale (VAS), and 10/100 point difference on the Kujala Patellofemoral scale, otherwise known as the Anterior Knee Pain Scale.

 

Statistical Analyses

 

Agreement between reviewers for the screening of articles was computed and reported using the ? statistic and 95% confidence interval (CI). Where available, we used data provided in the studies with a low risk of bias to measure the association between the tested interventions and the outcomes by computing the relative risk (RR) and its 95% CI. Similarly, we computed differences in mean changes between groups and 95% CI to quantify the effectiveness of interventions. The calculation of 95% CIs was based on the assumption that baseline and follow-up outcomes were highly correlated (r = 0.80).

 

Reporting

 

This systematic review was organized and reported based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement.

 

Dr. Alex Jimenez’s Insight

As a doctor of chiropractic, automobile accident injuries are one of the most common reasons people seek chiropractic care. From neck injuries, such as whiplash, to headaches and back pain, chiropractic can be utilized to safely and effectively restore the integrity of the spine after a car crash. A chiropractor like myself will often use a combination of spinal adjustments and manual manipulations, as well as a variety of other non-invasive treatment methods,�to gently correct any spinal misalignments resulting from an auto accident injury. Whiplash and other types of neck injuries occur when the complex structures along the cervical spine are stretched beyond their natural range of movement due to the sudden back-and-forth movement of the head and neck from the force of the impact. Back injury, particularly in the lower spine, are also common as a result of an automobile accident. When the complex structures along the lumbar spine are damaged or injured, symptoms of sciatica may radiate down the lower back, into the buttocks, hips, thighs, legs and down into the feet. Knee injuries may also occur upon impact during an auto accident. Exercise is frequently used with chiropractic care to help promote recovery as well as improve strength, flexibility and mobility. Rehabilitation exercises are offered to patients to further restore the integrity of their body. The following research studies demonstrate that exercise, compared to non-invasive treatment options, is a safe and effective treatment method for individuals suffering with neck and lower extremity injury from a car crash.

 

Results

 

Study Selection

 

We screened 9494 citations based on the title and abstract (Figure 1). Of these, 60 full-text publications were screened, and 9 articles were critically appraised. The primary reasons for ineligibility during full text screening were (1) ineligible study design, (2) small sample size (n b 30 per treatment arm), (3) multimodal interventions not allowing isolation of the effectiveness of exercise, (4) ineligible study population, and (5) interventions not meeting our definition of exercise (Figure 1). Of those critically appraised, 3 studies (reported in 4 articles) had low risk of bias and were included in our synthesis. The interrater agreement for the screening of the articles was ? = 0.82 (95% CI, 0.69-0.95). The percentage agreement for the critical appraisal of studies was 75% (6/8 studies). Disagreement was resolved through discussion for 2 studies. We contacted authors from 5 studies during critical appraisal to request additional information and 3 responded.

 

Figure 1 Flowchart Used for the Study

 

Study Characteristics

 

The studies with low risk of bias were RCTs. One study, conducted in the Netherlands, examined the effectiveness of a standardized exercise program compared to a �wait and see� approach in participants with patellofemoral pain syndrome of variable duration. A second study, with outcomes reported in 2 articles, compared the benefit of closed vs open kinetic chain exercises in individuals with�variable duration patellofemoral pain syndrome in Belgium. The final study, conducted in Denmark, investigated active training compared to a multimodal physiotherapy intervention for the management of persistent adductor-related groin pain.

 

Two RCTs used exercise programs that combined strengthening exercises with balance or agility training for the lower extremity. Specifically, the strengthening exercises consisted of both isometric and concentric contractions of the quadriceps, hip adductor, and gluteal muscles for the management of patellofemoral pain46 and hip adductors and muscles of the trunk and pelvis for adductor-related groin pain. The exercise programs ranged from 646 to 1243 weeks in duration and were supervised and clinic based with additional daily home exercises. The exercise programs were compared to a �wait and see� approach or to multimodal physiotherapy. The third RCT compared 2 different 5-week protocols which combined either closed or open kinetic chain strengthening and stretching exercises for the lower extremity musculature.

 

Meta-analysis was not performed due to heterogeneity of accepted studies with respect to patient populations, interventions, comparators, and outcomes. Principles of best evidence synthesis were used to develop evidence statements and perform a qualitative synthesis of findings from studies with low risk of bias.

 

Risk of Bias Within Studies

 

The studies with low risk of bias had a clearly defined research question, used appropriate blinding methods where possible, reported adequate similarity of baseline characteristics between treatment arms, and performed an intention-to-treat analyses where applicable (Table 3). The RCTs had follow-up rates greater than 85%. However, these studies also had methodological limitations: insufficient detail describing methods for allocation concealment (1/3), insufficient detail describing methods of randomization (1/3), the use of outcome measures that have not been demonstrated to be valid or reliable (ie, muscle length and successful treatment) (2/3), and clinically important differences in baseline characteristics (1/3).

 

Table 3 Risk of Bias for Accepted Randomized Control Trials Based on SIGN Criteria

 

Of 9 relevant articles, 5 were deemed to have high risk of bias. These studies had the following limitations: (1) poor or unknown randomization methods (3/5); (2) poor or unknown allocation concealment methods (5/ 5); (3) outcome assessor not blinded (4/ 5); (4) clinically important differences in baseline characteristics (3/5); (5) dropouts not reported, insufficient information regarding dropouts per group or large differences in dropout rates between treatment arms (N15%) (3/5); and (6) a lack of information about or no intention-to-treat analysis (5/5).

 

Summary of Evidence

 

Patellofemoral Pain Syndrome of Variable Duration. Evidence from 1 RCT suggests that a clinic-based progressive exercise program may provide short- and long-term benefit over usual care for the management of patellofemoral pain syndrome of variable duration. van Linschoten et al randomized participants with a clinical diagnosis of patellofemoral pain syndrome of 2 months to 2 years duration to (1) a clinic-based exercise program (9 visits over 6 weeks) consisting of progressive, static, and dynamic strengthening exercises for the quadriceps, adductor, and gluteal muscles and balance and flexibility exercises, or (2) a usual care �wait and see� approach. Both groups received standardized information, advice, and home-based isometric exercises for the quadriceps based on recommendations from Dutch General Practitioner guidelines (Table 4). There�were statistically significant differences favoring the exercise group for (1) pain (NRS) at rest at 3 months (mean change difference 1.1/10 [95% CI, 0.2-1.9]) and 6 months (mean change difference 1.3/10 [95% CI, 0.4-2.2]); (2) pain (NRS) with activity at 3 months (mean change difference 1.0/10 [95% CI, 0.1-1.9]) and 6 months (mean change difference 1.2/10 [95% CI, 0.2-2.2]); and (3) function (Kujala Patellofemoral Scale [KPS]) at 3 months (mean change difference 4.9/100 [95% CI, 0.1-9.7]). However, none of these differences were clinically important. Furthermore, there were no significant differences in the proportion of participants reporting recovery (fully recovered, strongly recovered), but the exercise group was more likely to report improvement at 3-month follow-up (odds ratio [OR], 4.1 [95% CI, 1.9-8.9]).

 

Image of patient engaging in rehabilitation exercises.

 

Evidence from a second RCT suggests that physiotherapist- supervised closed kinetic chain leg exercises (where the foot remains in constant contact with a surface) may provide short-term benefit compared to supervised open kinetic chain exercises (where the limb moves freely) for some patellofemoral pain syndrome symptoms (Table 4). All participants trained for 30 to 45 minutes, 3 times per week for 5 weeks. Both groups were instructed to perform static lower limb stretching after each training session. Those randomized to closed chain exercises performed supervised (1) leg presses, (2) knee bends, (3) stationary biking, (4) rowing, (5) step-up and step-down exercises, and (6) progressive jumping exercises. Open chain exercise participants performed (1) maximal quad muscle contraction, (2) straight-leg raises, (3) short arc movements from 10� to full knee extension, and (4) leg adduction. Effect sizes were not reported, but the authors reported statistically significant differences favoring closed kinetic chain exercise at 3 months for (1) frequency of locking (P = .03), (2) clicking sensation (P = .04), (3) pain with isokinetic testing (P = .03), and (4) pain during night (P = .02). The clinical significance of these results is unknown. There were no statistically significant differences between groups for any other pain or functional measures at any follow-up period.

 

Table 4 Evidence Table for Accepted Randomized Control Trials on the Effectiveness of Exercise for Soft Tissue Injuries of the Hip, Thigh, or Knee

 

Table 4 Evidence Table for Accepted Randomized Control Trials on the Effectiveness of Exercise for Soft Tissue Injuries of the Hip, Thigh, or Knee

 

Persistent Adductor-Related Groin Pain

 

Evidence from 1 RCT suggests that a clinic-based group exercise program is more effective than a multimodal program of care for persistent adductor-related groin pain. H�lmich et al studied a group of male athletes with a clinical diagnosis of adductor-related groin pain of greater than 2 months duration (median duration, 38-41 weeks; range, 14-572 weeks) with or without osteitis pubis. Participants were randomized to (1) a clinic-based group exercise program (3 sessions per week for 8-12 weeks) consisting of isometric and concentric resistance strengthening exercises for the adductors, trunk, and pelvis; balance and agility exercises for the lower extremity; and stretching for the abdominals, back, and lower extremity (with the exception of the adductor muscles) or (2) a multimodal physiotherapy program (2 visits per week for 8-12 weeks) consisting of laser; transverse friction massage; transcutaneous electrical nerve stimulation (TENS); and stretching for the adductors, hamstrings, and hip flexors (Table 4). Four months after the intervention, the exercise group was more likely to report that their condition was �much better� (RR, 1.7 [95% CI, 1.0-2.8]).

 

Adverse Events

 

None of the included studies commented on the frequency or nature of adverse events.

 

Discussion

 

Summary of Evidence

 

Our systematic review examined the effectiveness of exercise for the management of soft tissue injuries of the hip, thigh, or knee. Evidence from 1 RCT suggests that a clinic-based progressive combined exercise program may offer additional short- or long-term benefit compared to providing information and advice for the management of patellofemoral pain syndrome of variable duration. There is also evidence that supervised closed kinetic chain exercises may be beneficial for some patellofemoral pain syndrome symptoms compared to open kinetic chain exercises. For persistent adductor-related groin pain, evidence from 1 RCT suggests that a clinic-based group exercise program is more effective than a multimodal program of care. Despite the common and frequent use of exercise prescription, there is limited high-quality evidence to inform the use of exercise for the management of soft tissue injuries of the lower extremity. Specifically, we did not find high-quality studies on exercise for the management of some of the more commonly diagnosed conditions including patellar tendinopathy, hamstring sprain and strain injuries, hamstring tendinopathy, trochanteric bursitis, or capsular injuries of the hip.

 

Image of Dr. Jimenez demonstrating rehabilitation exercises to patient.

 

Previous Systematic Reviews

 

Our results are consistent with findings from previous systematic reviews, concluding that exercise is effective for the management of patellofemoral pain syndrome and groin pain. However, the results from previous systematic reviews examining the use of exercise for the management of patellar tendinopathy and acute hamstring injuries are inconclusive. One review noted strong evidence for use of eccentric training, whereas others reported uncertainty of whether isolated eccentric exercises were beneficial for tendinopathy compared to other forms of exercise. Furthermore, there is limited evidence of a positive effect from stretching, agility and trunk stability exercises, or slump stretching for the management of acute�hamstring injuries. Differing conclusions between systematic reviews and the limited number of studies deemed admissible in our work may be attributed to differences in methodology. We screened reference lists of previous systematic reviews, and most studies included in the reviews did not meet our inclusion criteria. Many studies accepted in other reviews had small sample sizes (b30 per treatment arm). This increases the risk of residual confounding while also reducing the effect size precision. Furthermore, a number of systematic reviews included case series and case studies. These types of studies are not designed to assess the effectiveness of interventions. Finally, previous reviews included studies where exercise was part of a multimodal intervention, and as a consequence, the isolated effect of exercise could not be ascertained. Of the studies that satisfied our selection criteria, all were critically appraised in our review, and only 3 had low risk of bias and were included in our synthesis.

 

Strengths

 

Our review has many strengths. First, we developed a rigorous search strategy that was independently reviewed by a second librarian. Second, we defined clear inclusion and exclusion criteria for the selection of possibly relevant studies and only considered studies with adequate sample sizes. Third, pairs of trained reviewers screened and critically appraised eligible studies. Fourth, we used a valid set of criteria (SIGN) to critically appraise studies. Finally, we restricted our synthesis to studies with low risk of bias.

 

Limitations and Recommendations for Future Research

 

Our review also has limitations. First, our search was limited to studies published in the English language. However, previous reviews have found that the restriction of systematic reviews to English language studies has not led to a bias in reported results. Second, despite our broad definition of soft tissue injuries of the hip, thigh, or knee, our search strategy may not have captured all potentially relevant studies. Third, our review may have missed potentially relevant studies published before 1990. We aimed to minimize this by hand searching the reference lists of previous systematic reviews. Finally, critical appraisal requires scientific judgment that may differ between reviewers. We minimized this potential bias by training reviewers in the use of the SIGN tool and using a consensus process to determine study admissibility. Overall, our systematic review highlights a deficit of strong research in this area.

 

High-quality studies on the effectiveness of exercise for the management of soft tissue injuries of the lower extremity are needed. Most studies included in our review (63%) had a high risk of bias and could not be included in our synthesis. Our review identified important gaps in the literature. Specifically, studies are needed to inform the specific effects of exercises, their long-term effects, and the optimal doses of intervention. Furthermore, studies are needed to determine the relative effectiveness of different types of exercise programs and if the effectiveness varies for soft tissue injuries of the hip, thigh, and knee.

 

Conclusion

 

There is limited high-quality evidence to inform the use of exercise for the management of soft tissue injuries of the hip, thigh, and knee. The current evidence suggests that a clinic-based progressive combined exercise program may lead to improved recovery when added to information and advice on resting and avoiding pain provoking activities for the management of patellofemoral pain syndrome. For persistent adductor-related groin pain, a supervised clinic- based group exercise program is more effective than multimodal care in promoting recovery.

 

Funding Sources and Potential Conflicts of Interest

 

This study was funded by the Ontario Ministry of Finance and the Financial Services Commission of Ontario (RFP no. OSS_00267175). The funding agency was not involved in the collection of data, data analysis, interpretation of data, or drafting of the manuscript. The research was undertaken, in part, thanks to funding from the Canada Research Chairs program. Pierre C�t� has previously received funding from a Grant from the Ontario Ministry of Finance; consulting for the Canadian Chiropractic Protective Association; speaking and/or teaching arrangements for the National Judicial Institute and Soci�t� des M�decins Experts du Quebec; trips/travel, European Spine Society; board of directors, European Spine Society; grants: Aviva Canada; fellowship support, Canada Research Chair Program�Canadian Institutes of Health Research. No other conflicts of interest were reported for this study.

 

Contributorship Information

 

  • Concept development (provided idea for the research): D.S., C.B., P.C., J.W., H.Y., S.V.
  • Design (planned the methods to generate the results): D.S., C.B., P.C., H.S., J.W., H.Y., S.V.
  • Supervision (provided oversight, responsible for organization and implementation, writing of the manuscript): D.S., P.C.
  • Data collection/processing (responsible for experiments, patient management, organization, or reporting data): D.S., C.B., H.S., J.W., D.e.S., R.G., H.Y., K.R., J.C., K.D., P.C., P.S., R.M., S.D., S.V.
  • Analysis/interpretation (responsible for statistical analysis, evaluation, and presentation of the results): D.S., C.B., P.C., H.S., M.S., K.R., L.C.
  • Literature search (performed the literature search): A.T.V.
  • Writing (responsible for writing a substantive part of the manuscript): D.S., C.B., P.C., H.S.
  • Critical review (revised manuscript for intellectual content, this does not relate to spelling and grammar checking): D.S., P.C., H.S., J.W., D.e.S., R.G., M.S., A.T.V., H.Y., K.R., J.C., K.D., L.C., P.S., S.D., R.M., S.V.

 

Practical Applications

 

  • There is evidence to suggest that clinic-based exercises may benefit patients with patellofemoral pain syndrome or adductor-related groin pain.
  • Supervised progressive exercises may be beneficial for patellofemoral pain syndrome of variable duration compared to information/advice.
  • Supervised closed kinetic chain exercises may provide more benefit compared to open kinetic chain exercises for some patellofemoral pain syndrome symptoms.
  • Self-rated improvement in persistent groin pain is higher after a clinic-based group exercise program compared to multimodal physiotherapy.

 

Are Non-Invasive Interventions Effective for the Management of Headaches Associated with Neck Pain?

 

Furthermore,�other non-invasive interventions, as well as non-pharmacological interventions, are also commonly utilized to help treat symptoms of neck pain and headaches associated with neck injuries, such as whiplash, caused by automobile accidents. As mentioned before, whiplash is one of the most common types of neck injuries resulting from auto accidents. Chiropractic care, physical therapy and exercise, can be used to improve the symptoms of neck pain, according to the following research studies.

 

Abstract

 

Purpose

 

To update findings of the 2000�2010 Bone and Joint Decade Task Force on Neck Pain and its Associated Disorders and evaluate the effectiveness of non-invasive and non-pharmacological interventions for the management of patients with headaches associated with neck pain (i.e., tension-type, cervicogenic, or whiplash-related headaches).

 

Methods

 

We searched five databases from 1990 to 2015 for randomized controlled trials (RCTs), cohort studies, and case�control studies comparing non-invasive interventions with other interventions, placebo/sham, or no interventions. Random pairs of independent reviewers critically appraised eligible studies using the Scottish Intercollegiate Guidelines Network criteria to determine scientific admissibility. Studies with a low risk of bias were synthesized following best evidence synthesis principles.

 

Results

 

We screened 17,236 citations, 15 studies were relevant, and 10 had a low risk of bias. The evidence suggests that episodic tension-type headaches should be managed with low load endurance craniocervical and cervicoscapular exercises. Patients with chronic tension-type headaches may also benefit from low load endurance craniocervical and cervicoscapular exercises; relaxation training with stress coping therapy; or multimodal care that includes spinal mobilization, craniocervical exercises, and postural correction. For cervicogenic headaches, low load endurance craniocervical and cervicoscapular exercises; or manual therapy (manipulation with or without mobilization) to the cervical and thoracic spine may also be helpful.

 

Image of elderly couple participating in low-impact rehabilitation exercises.

 

Conclusions

 

The management of headaches associated with neck pain should include exercise. Patients who suffer from chronic tension-type headaches may also benefit from relaxation training with stress coping therapy or multimodal care. Patients with cervicogenic headache may also benefit from a course of manual therapy.

 

Keywords

 

Non-invasive interventions, Tension-type headache, Cervicogenic headache, Headache attributed to whiplash injury, Systematic review

 

Notes

 

Acknowledgments

 

We would like to acknowledge and thank all of the individuals who have made important contributions to this review: Robert Brison, Poonam Cardoso, J. David Cassidy, Laura Chang, Douglas Gross, Murray Krahn, Michel Lacerte, Gail Lindsay, Patrick Loisel, Mike Paulden, Roger Salhany, John Stapleton, Angela Verven, and Leslie Verville. We would also like to thank Trish Johns-Wilson at the University of Ontario Institute of Technology for her review of the search strategy.

 

Compliance with Ethical Standards

 

Conflict of Interest

 

Dr. Pierre C�t� has received a grant from the Ontario government, Ministry of Finance, funding from the Canada Research Chairs program, personal fees from National Judicial Institute for lecturing, and personal fees from European Spine Society for teaching. Drs. Silvano Mior and Margareta Nordin have received reimbursement for travel expenses to attend meetings for the study. The remaining authors report no declarations of interest.

 

Funding

 

This work was supported by the Ontario Ministry of Finance and the Financial Services Commission of Ontario [RFP# OSS_00267175]. The funding agency had no involvement in the study design, collection, analysis, interpretation of data, writing of the manuscript or decision to submit the manuscript for publication. The research was undertaken, in part, thanks to funding from the Canada Research Chairs program to Dr. Pierre C�t�, Canada Research Chair in Disability Prevention and Rehabilitation at the University of Ontario Institute of Technology.

 

In conclusion,�exercise included in chiropractic care and other non-invasive interventions should be utilized as an essential part of treatment to further help improve the symptoms of neck injury as well as that of hip, thigh and knee injury. According to the above research studies, exercise, or physical activity, is beneficial towards speeding up recovery time for patients with automobile accident injuries and for restoring strength, flexibility and mobility to the affected structures of the spine. Information referenced from the National Center for Biotechnology Information (NCBI). The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

 

Curated by Dr. Alex Jimenez

 

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Additional Topics: Sciatica

 

Sciatica is referred to as a collection of symptoms rather than a single type of injury or condition. The symptoms are characterized as radiating pain, numbness and tingling sensations from the sciatic nerve in the lower back, down the buttocks and thighs and through one or both legs and into the feet. Sciatica is commonly the result of irritation, inflammation or compression of the largest nerve in the human body, generally due to a herniated disc or bone spur.

 

blog picture of cartoon paperboy big news

 

IMPORTANT TOPIC: EXTRA EXTRA: Treating Sciatica Pain

 

 

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Functional Fitness & Chiropractic Care for Back Pain

Functional Fitness & Chiropractic Care for Back Pain

In association with professional experience in fitness and chiropractic care,�symptoms of back pain have been determined to improve in people who participate in physical activity and exercise, as directed by a physiotherapist, or physical therapist, or any other healthcare professional, such as a chiropractor. Various complementary and alternative treatment options for back pain also involve the use of functional fitness therapy, however, additional evidence-based research studies on the effectiveness of physical activity and exercise are still needed.

 

On a personal note, chiropractic care utilizes spinal adjustments and manual manipulations to carefully correct misalignments on the spine, or spinal subluxations. Along with chiropractic treatment, a doctor of chiropractor may also recommend a series of stretches and exercises to help increase flexibility, strength and mobility, improving the overall function of the spine. Physical activity for low back pain has been evaluated in the randomized controlled trial below.

Abstract

 

Objective

 

To evaluate effectiveness of an exercise programme in a community setting for patients with low back pain to encourage a return to normal activities.

 

Design

 

Randomised controlled trial of progressive exercise programme compared with usual primary care management. Patients� preferences for type of management were elicited independently of randomisation.

 

Participants

 

187 patients aged 18-60 years with mechanical low back pain of 4 weeks to 6 months� duration.

 

Interventions

 

Exercise classes led by a physiotherapist that included strengthening exercises for all main muscle groups, stretching exercises, relaxation session, and brief education on back care. A cognitive-behavioural approach was used.

 

Main Outcome Measures

 

Assessments of debilitating effects of back pain before and after intervention and at 6 months and 1 year later. Measures included Roland disability questionnaire, Aberdeen back pain scale, pain diaries, and use of healthcare services.

 

Results

 

At 6 weeks after randomisation, the intervention group improved marginally more than the control group on the disability questionnaire and reported less distressing pain. At 6 months and 1 year, the intervention group showed significantly greater improvement in the disability questionnaire score (mean difference in changes 1.35, 95% confidence interval 0.13 to 2.57). At 1 year, the intervention group also showed significantly greater improvement in the Aberdeen back pain scale (4.44, 1.01 to 7.87) and reported only 378 days off work compared with 607 in the control group. The intervention group used fewer healthcare resources. Outcome was not influenced by patients� preferences.

 

Conclusions

 

The exercise class was more clinically effective than traditional general practitioner management, regardless of patient preference, and was cost effective.

 

Key Messages

 

  • Patients with back pain need to return to normal activities as soon as possible but are often afraid that movement or activity may be harmful
  • An exercise programme led by a physiotherapist in the community and based on cognitive-behavioural principles helped patients to cope better with their pain and function better even one year later
  • Patients� preferences for type of management did not affect outcome
  • Patients in the intervention group tended to use fewer healthcare resources and took fewer days off work
  • This type of exercise programme should be more widely available

 

Introduction

 

Low back pain is common and, although it may settle quickly, recurrence rates are about 50% in the following 12 months. Recent management guidelines recommend that an early return to physical activities should be encouraged, but patients are often afraid of movement after an acute onset of back pain. Trials of specific exercise programmes for acute back pain have not shown them to be effective, but a specific exercise programme may have to be tailored to suit the individual patient and so is less likely to be effective for a heterogeneous group of patients.

 

However, there is some evidence that a general exercise programme, which aims to increase individuals� confidence in the use of their spine and overcome the fear of physical activity, can be effective for patients with chronic back pain (of more than six months� duration). A recent randomised trial of a supervised exercise programme in a hospital setting reported significantly better outcomes at six months and two years for the exercise group compared with the control group. Whether this approach would be effective and cost effective for patients with low back pain of less than six months� duration in a primary care setting is unknown.

 

Image 1 Exercise Classes for Back Pain

 

An important methodological problem occurs when it is not possible to blind subjects to the treatment they receive, since outcome is probably directly influenced by their preconceived ideas regarding the effectiveness of intervention. Thus, in trials where a double blind procedure is not feasible, participants who are not randomised to their treatment of choice may be disappointed and suffer from resentful demoralisation, whereas those randomised to their preferred treatment may have a better outcome irrespective of the physiological efficacy of the intervention. However, this problem may be partly ameliorated if patients� treatment preferences are elicited before randomisation, so that they can be used to inform the analysis of costs and outcomes.

 

In this paper, we report a fully randomised trial for the treatment of subacute low back pain in which the analysis was informed by patient preference.

 

Subjects and Methods

 

Recruitment of Subjects

 

Eighty seven general practitioners agreed to participate in the study, and the principal investigator (JKM) visited each practice to discuss participation. Selection of general practitioners was based in the York area and restricted by the need to provide easy access for patients to the classes. Only one invited practice declined to participate. Single handed practices were not invited. The general practitioners referred patients directly to the research team or sent a monthly list of patients who had consulted with back pain. Inclusion criteria were patients with mechanical low back pain of at least four weeks� duration but less than six months, aged between 18 and 60, declared medically fit by their general practitioner to undertake the exercise, and who had consulted one of the general practitioners participating in the study. Patients with any potentially serious pathology were excluded, as were any who would have been unable to attend or participate in the classes. The exclusion criteria were the same as described by Frost et al except that concurrent physiotherapy rather than previous physiotherapy was an exclusion criterion in this trial.

 

Evaluation

 

Patients who seemed eligible were contacted by telephone and if they were interested in participating in the study were invited to an initial interview, at which the study and its implications for participants were explained. Patients who met all the eligibility criteria and consented to participate attended a first assessment a week later.

 

Image 2 Physical Examination for Back Pain

 

This included a physical examination (to exclude possible serious spinal pathology) and collection of baseline data by means of validated measures of health status. The main outcome measures were the Roland back pain disability questionnaire, which measures functional limitations due to back pain, and the Aberdeen back pain scale, which is more a measure of clinical status. The Roland disability questionnaire consists of a 24 point scale: a patient scoring three points on the scale means that he or she reports, for example, �Because of my back I am not doing any of the jobs that I usually do around the house, I use a handrail to get upstairs, and I lie down to rest more often.� We also administered the EuroQoL health index (EQ-5D) and the fear and avoidance beliefs questionnaire (FABQ).

 

The second assessment was carried out at the patients� general practice six weeks after randomisation to treatment. The brief physical examination was repeated, and the patients were asked to complete the same outcome questionnaires.

 

In addition, patients were asked to complete pain diaries in the week before their first assessment and in the week before their second assessment. The diaries were used to assess subjective pain reports and asked �How strong is the pain?� and �How distressing is the pain?�

 

We also evaluated patients at six and 12 months� follow up by sending them outcome questionnaires to complete and return.

 

Randomisation and Treatments

 

A pre-prepared randomisation list was generated from a random numbers table and participants were stratified by practice in blocks of six. The trial coordinator ensured concealment of allocation from the clinical researchers by providing the research physiotherapist with a sealed envelope for a named patient before baseline assessment. A note inside the envelope invited the participant either to attend exercise classes or to continue with the current advice or treatment offered by his or her general practitioner. (One of the referring general practitioners used manipulation as usual treatment on most of his patients so that up to 37 patients in each arm of the study could also have received manipulation.) Each patient had an equal chance of being allocated to the intervention or the control group. Before patients were given their envelope they were asked whether they had any preference for the treatment assignment. The participants opened the envelope after leaving the surgery.

 

Intervention group�The exercise programme consisted of eight sessions, each lasting an hour, spread out over four weeks, with up to 10 participants in each class. The programme was similar to the Oxford fitness programme and included stretching exercises, low impact aerobic exercises, and strengthening exercises aimed at all the main muscle groups. The overall aim was to encourage normal movement of the spine. No special equipment was needed. Participants were discouraged from viewing themselves as invalids and from following the precept of �Let pain be your guide.� They were encouraged to improve their individual record and were selectively rewarded with attention and praise. Although partly based on a traditional physiotherapy approach, the programme used cognitive-behavioural principles. One simple educational message encouraging self reliance was delivered at each class. Participants were told that they should regard the classes as a stepping stone to increasing their own levels of activity.

 

Controls�Patients allocated to the control group continued under the care of their doctor and in some cases were referred to physiotherapy as usual. No attempt was made to regulate the treatment they received, but it was recorded.

 

Economic Analysis

 

We recorded patients� use of healthcare services using a combination of retrospective questionnaires and prospective diary cards, which they returned at 6 and 12 months� follow up. From this information we estimated the cost of each patient�s treatment. We compared the mean costs of treatment for the two groups by using Student�s t tests and standard confidence intervals. However, as cost data were highly positively skewed, these results were checked with a non-parametric �bootstrap.� The economic evaluation addressed both costs to the NHS and the costs to society. Participants were not charged for the classes, in line with any treatment currently available on the NHS.

 

Statistical Analysis

 

Our original intention was to recruit 300 patients, which, given a standard deviation of 4, would have provided 90% power at the 5% significance level to detect a 1.5 point difference between the two groups in the mean change on the Roland disability questionnaire. However, recruitment of patients to the study proved much slower than expected, and, because of the limitations of study resources, recruiting was stopped after 187 patients had been included into the study. This smaller sample reduced the power to detect such a difference to 72%, but there was still 90% power to detect a 2 point difference in outcome.

 

Our analysis was based on intention to treat. We estimated the effects of treatment on the outcome measures by means of analysis of covariance, with the change in scores as the dependent variable and adjustment being made for baseline score and patient preference. We used Student�s t tests to analyse the data from the pain diaries as the baseline scores were quite similar.

 

Dr. Alex Jimenez’s Insight

In consideration with the research study regarding a randomized controlled trial coordinated to determine the effectiveness of functional fitness towards the improvement of low back pain, we supplement our philosophies of overall health and wellness to our patients and we make sure to take their recovery and rehabilitation to the next level. Our fitness and chiropractic care treatment goes beyond many other medically advanced methods. The proprietary treatment methods offered at our clinic promote true well-being and fitness practices with a primary goal on the calibration of the human body. The outcome measures of the randomized controlled trial on exercise for low back pain involved two groups of participants, an intervention group and a control group. The results are recorded below.

 

Results

 

Study Population

 

Of the 187 patients included in the trial, 89 were randomised to the intervention and 98 to the control group. The figure shows their progress through the trial. In both groups those with the most severe back pain at randomisation were less likely to return follow up questionnaires: the mean Roland disability questionnaire score for responders at one year follow up was 5.80 (SD 3.48) compared with a mean score of 9.06 (4.58) for non responders respectively (P=0.002).

 

Baseline Characteristics

 

The clinical and demographic characteristics of the patients in the two groups were fairly well balanced at randomisation (Table 1), although those allocated to the intervention group tended to report more disability on the Roland disability questionnaire than did the control group. Most patients (118, 63%), when asked, would have preferred to be allocated to the exercise programme. Attendance of the classes was considered quite good, with 73% of the intervention group attending between six and eight of the classes. Four people failed to attend any classes and were included in the intention to treat analysis. No patients allocated to the control group took part in the exercise programme.

 

Table 1 Baseline Characteristics of Patients with Mechanical Low Back Pain Included in Study

Table 1: Baseline characteristics of patients with mechanical low back pain included in study. Values are means (standard deviations) unless stated otherwise.

 

Clinical Outcomes

 

Table ?2 shows the mean changes in outcome measures over time, from randomisation to final follow up at one year. After adjustment for baseline scores, the intervention group showed greater decreases in all measures of back pain and disability compared with the controls. At six weeks after randomisation, patients in the intervention group reported less distressing pain than the control group (P=0.03) and a marginally significant difference on the Roland disability questionnaire scores. Other variables were not significantly different, but the differences in change were all in favour of the intervention group. At six months the difference of the mean change scores of the Roland disability questionnaire was significant, and at one year the differences in changes of both the Roland disability questionnaire and the Aberdeen back pain scale were significant (Table ?2). Most of the intervention group improved by at least three points on the Roland disability questionnaire: 53% (95% confidence interval 42% to 64%) had done so at six weeks, 60% (49% to 71%) at six months, and 64% (54% to 74%) at one year. A smaller proportion of the control group achieved this clinically important improvement: 31% (22% to 40%) at six weeks, 40% (29% to 50%) at six months, and 35% (25% to 45%) at one year.

 

Table 2 Changes in Back Pain Scores from Baseline Values in Intervention and Control Groups

Table 2: Changes in back pain scores from baseline values in intervention and control groups at 6 weeks, 6 months, and 1 year follow up.

 

Patients� Preference

 

We examined the effect of patients� baseline preference for treatment on outcome after adjusting for baseline scores and main effects. Preference did not significantly affect response to treatment. The intervention had similar effects on both costs and outcomes regardless of baseline preference. For example, the change in the Roland disability questionnaire score at 12 months in the control group was ?1.93 for patients who preferred intervention and ?1.18 for those who were indifferent (95% confidence interval of difference ?1.05 to 2.55), and in the intervention group the change in score was ?3.10 for those who preferred intervention and ?3.15 for those who were indifferent ((95% confidence interval of difference ?1.47 to 3.08). As the interaction term (preference by random allocation) was non-significant, the results shown in Table ?2 exclude the preference term.

 

Economic Evaluation

 

Patients in the intervention group tended to use fewer healthcare and other resources compared with those in the control group (Table ?3). However, the mean difference, totalling �148 per patient, was not significant: the 95% confidence interval suggests there could have been a saving of as much as �442 per patient in the intervention group or an additional cost of up to �146. Patients in the control group took a total of 607 days off work during the 12 months after randomisation compared with 378 days taken off by the intervention group.

 

Table 3 Use of Services and their Costs Associated with Back Pain in the Two Study Groups

Table 3: Use of services and their costs associated with back pain in the two study groups at 12 months follow up.

 

Discussion

 

Our results support the hypothesis that a simple exercise class can lead to long term improvements for back pain sufferers. Studies have shown that a similar programme for patients with chronic back pain can be effective in the hospital setting. In this study we show the clinical effectiveness for patients with subacute or recurrent low back pain who were referred by their general practitioner to a community programme.

 

Current management guidelines for low back pain recommend a return to physical activity and taking exercise. In particular, they recommend that patients who are not improving at six weeks after onset of back pain, which may be a higher proportion than previously realised, should be referred to a reactivation programme. The programme we evaluated fits that requirement well. It shows participants how they can safely start moving again and increase their levels of physical activity. It is simple and less costly than individual treatment.

 

It seemed to have beneficial effects even one year later, as measured by functional disability (Roland disability questionnaire) and clinical status (Aberdeen back pain scale). The mean changes in scores on these instruments were small, with many patients reporting mild symptoms on the day of entry to the trial. However, a substantially larger proportion of participants in the exercise classes gained increases of over three points on the Roland disability questionnaire at six weeks, six months, and one year, which might be clinically important. At six weeks, participants in the exercise classes reported significantly less distressing pain compared with the control group, although the intensity of pain was not significantly different. This is consistent with findings from a study of chronic back pain patients in Oxford, in which changes in distressing pain were much greater than were the changes in intensity of pain.

 

People with back pain who use coping strategies that do not avoid movement and pain have less disability. In our study the participants in the exercise classes were able to function better according to Roland disability questionnaire scores than the control group at six months and one year after randomisation to treatment, and at one year they also showed a significantly greater improvement in clinical status as measured by the Aberdeen back pain scale. This increase in differences in effect between the intervention and control groups over time is consistent with the results from long term follow up in comparable back pain trials.

 

Study Design

 

The design of this study was a conventional randomised controlled trial in that all eligible patients were randomised. However, the participants were asked to state their preferred treatment before they knew of their allocation. A study of antenatal services showed that preferences can be an important determinant of outcome, but we did not find any strong effect of preference on the outcome, although a much larger sample size would be needed to confidently exclude any modest interaction between preference and outcome. This information may be useful to clinicians in that it suggests that exercise classes are effective even in patients who are not highly motivated. Our trial design, of asking patients for their preferences at the outset, has substantial advantages over the usual patient preference design, in which costs and outcomes cannot be reliably controlled for confounding by preference.

 

Conclusions

 

Our exercise programme did not seem to influence the intensity of pain but did affect the participants� ability to cope with the pain in the short term and even more so in the longer term. It used a cognitive-behavioural model, shifting the emphasis away from a disease model to a model of normal human behaviour, and with minimal extra training a physiotherapist can run it. Patients� preferences did not seem to influence the outcome.

 

Figure 1 Flow Chart Describing Patient Progress Through the Trial

Figure 1: Flow chart describing patients’ progress through the trial.

 

Footnotes

 

Funding: This research was funded by the Arthritis Research Campaign, the Northern and Yorkshire Regional Health Authority, and the National Back Pain Association.

 

Competing interests: None declared.

 

In conclusion,�the participation of patients in functional fitness and/or exercise as recommended by a physiotherapist, or physical therapist, or any other healthcare professional, such as a chiropractor, is essential towards the improvement of their symptoms of low back pain. The exercise programme helped patients better cope with their symptoms of back pain where the intervention group showed that they used fewer healthcare resources and took fewer day off work, according to the outcome measures of the research study. Information referenced from the National Center for Biotechnology Information (NCBI). The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

 

Curated by Dr. Alex Jimenez

 

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Additional Topics: Sciatica

 

Sciatica is referred to as a collection of symptoms rather than a single type of injury or condition. The symptoms are characterized as radiating pain, numbness and tingling sensations from the sciatic nerve in the lower back, down the buttocks and thighs and through one or both legs and into the feet. Sciatica is commonly the result of irritation, inflammation or compression of the largest nerve in the human body, generally due to a herniated disc or bone spur.

 

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IMPORTANT TOPIC: EXTRA EXTRA: Treating Sciatica Pain

 

 

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Safe Physiotherapy Interventions in Cervical Disc Herniations

Safe Physiotherapy Interventions in Cervical Disc Herniations

Recognizing clinical and experimental evidence, physiotherapy is a healthcare profession that helps restore and maintain function to individuals affected by injury, disease or disability by using mechanical force and movements, manual therapy, exercise and electrotherapy, as well as through patient education and advice. The terms physiotherapy and physical therapy are used interchangeably to describe the same healthcare profession. Physiotherapy is recommended for a variety of injuries and conditions, and it can help support overall health and wellness for people of all ages.

 

For further notice,�physiotherapy services may be offered alongside chiropractic care, to provide a cautious and gentle manipulation and/or mobilization of the cervical and thoracic spine in the instance of a large cervical disc herniation. Cervical disc herniations can cause pain and discomfort, numbness and weakness in the neck, shoulders, chest, arms and hands.

Abstract

 

A 34-year-old woman was seen in a physiotherapy department with signs and symptoms of cervical radiculopathy. Loss of cervical lordosis and a large paracentral to intraforaminal disc prolapse (8?mm) at C5�C6 level was reported on MRI. She was taking diclofenac sodium, tramadol HCl, diazepam and pregabalin for the preceding 2?months and no significant improvement, except temporary relief, was reported. She was referred to physiotherapy while awaiting a surgical opinion from a neurosurgeon. In physiotherapy she was treated with mobilisation of the upper thoracic spine from C7 to T6 level. A cervical extension exercise was performed with prior voluntary extension of the thoracic spine and elevated shoulders. She was advised to continue the same at home. General posture advice was given. Signs and symptoms resolved within the following four sessions of treatment over 3?weeks. Surgical intervention was subsequently deemed unnecessary.

 

Background

 

Surgical interventions are commonly recommended in large cervical prolapsed discs and the importance of non-aggressive physiotherapy interventions is less recognised and poorly understood. We present interventions that were associated with resolution of symptoms of radiculopathy resulting from a larger cervical herniated disc. These interventions, if applied correctly, may help to reduce the number of surgeries required for cervical prolapsed discs.

 

Case Presentation

 

The patient was a 34-year-old woman. She was seen in the physiotherapy department with a complaint of left-sided neck and shoulder pain. The pain was radiating to her left arm and there was associated numbness. The duration of symptoms was more than 2?months with no history of trauma. The pain was present on waking in the morning and gradually increased during the day. She was otherwise a healthy woman. Neck movements were aggravating the symptoms. She was seen in the acute hospital accident and emergency department (A&E) twice since onset and had been taking diclofenac sodium, tramadol HCl, diazepam and pregabalin. An MRI was planned and a request was sent for physiotherapy during the MRI waiting period. A neurosurgical review was requested by the A&E consultant upon receipt of the MRI report 7?weeks later.

 

Patient examination in the physiotherapy department revealed a normal gait pattern, her left arm held in front of her chest with the left shoulder slightly elevated. Her active range of neck motion was restricted and was painful on the left side. Flexion and rotation to the left were aggravating her arm and shoulder pain. Strength deficits were noted in the left elbow flexors and wrist extensors (4/5) when compared with the right side. There was paraesthesia along the radial border of the forearm and thumb regions. The brachioradialis reflex was diminished and biceps reflex was sluggish. Triceps and plantar reflexes were normal. Passive intervertebral movements were tender at C5�C6 level and were reproducing the pain. Sustained pressure at C7 and below was easing the pain and also improving the neck range of motion. The patient was deemed to have C6 radiculopathy. The MRI report, available 2?weeks after the commencement of physiotherapy, confirmed the diagnosis.

 

Investigations

 

The findings from the plain cervical x-ray were unremarkable. MRI showed (Figure 1) loss of cervical spine lordosis, a left paracentral to intraforaminal lesion with 8?mm hernia, which indented the cord and obstructed the left paracentral recess and neural foramen.

 

Figure 1 Loss of Cervical Spine Lordosis and Large Disc Herniation at C5 and C6 on MRI

Figure 1: Loss of cervical spine lordosis and large disc herniation at C5 and C6 on MRI.

 

Differential Diagnosis

 

  • Cervical myelopathy.

 

Treatment

 

The patient received pharmacological treatment for the initial two symptomatic months, which included diclofenic sodium, tramadol, diazepam and pregabalin (lyrica) tablet. Physiotherapy was started after 2?months. Physiotherapy intervention consisted of mobilisation of the thoracic spine, resisted cervical extension exercises, a home programme of exercises and advice regarding the posture.

 

Mobilisation of the thoracic spine was administered in the prone lying position from C7 toT6 level. Mild intensity oscillations (15?reps) in an anterosuperior direction were directly applied to each of the spinal segments, through the thumb over the spinous processes, during the first visit. The applied force was enough to appreciate intervertebral movement in each segment and without significant pain. High-intensity oscillations (10�20) were applied during the subsequent treatment sessions. The patient was asked for symptom feedback during treatment.

 

Cervical spine extension exercises were carried out in a sitting position. The patient was asked to extend her thoracic spine with lungs fully inflated and shoulders elevated followed by extension of her cervical spine. Head extension was moderately resisted by the therapist near the end range of extension for 5�10?s and brought back to neutral after each resisted movement. The resisted movement was repeated at least three times with intervals of 30?s. The patient was asked to perform the same exercise at home every hour during the day.

 

The patient was educated regarding the rationale of extension exercises, sitting and lying posture and their effects on the spine. The duration of each session was approximately 20�25?min.

 

Dr. Alex Jimenez’s Insight

Surgical interventions are generally recommended and widely considered for large cervical disc herniations. Although less recognized and often misunderstood, however, physiotherapy can be just as effective towards improving herniated discs in the cervical spine, excluding the need for surgery, according to the research study. Pharmacological treatments are also commonly used to help temporarily reduce symptoms alongside physiotherapy interventions. Cautious and gentle, spinal manipulation and mobilization of the cervical spine should be performed in the case of large cervical disc herniations to avoid aggravating the injury and/or condition. As recommended by a physiotherapist, or other healthcare professional experienced in physiotherapy, proper exercise can restore the function of the cervical spine and prevent regression of large prolapsed discs along the spine. Through appropriate physiotherapy intervention as well as through patient safety and compliance, the retraction of the cervical herniated discs is possible.

 

Outcome and Follow-Up

 

Pharmacological interventions were helpful to reduce the patient’s pain on a temporary basis. Symptoms were recurring and resolution was not sustainable. The symptoms started improving after the first physiotherapy session and continued to improve during the subsequent sessions. It fully resolved in four sessions extended over 3?weeks. The patient was reviewed 4?months after the resolution of symptoms and there was no recurrence of symptoms. She was reviewed by a neurosurgeon and the surgical option was withdrawn.

 

Discussion

 

Stiffness of the thoracic spine has been linked to the painful pathologies of the cervical spine, and manipulation of the thoracic spine has been shown to improve painful symptoms and mobility of the cervical spine. However, cervical disc herniations of greater than 4?mm are considered inappropriate for physiotherapy interventions such as traction and manipulation. Spinal manipulation refers to a passive movement thrust of high velocity and low amplitude, usually applied at the end range of movement and is beyond the patient’s control. Manipulation of the cervical spine is an aggressive procedure, which carries various risks and is often associated with worsening of symptoms. Manipulation was not considered in the treatment options for this patient because of the risks associated with it, and also because of patient’s anxiety and lack of MRI-confirmed diagnosis.

 

Active extension of the thoracic spine increases the range of motion of the cervical spine and, in these authors� clinical experience, relieves minor neck symptoms. Conversely, thoracic spine kyphosis, such as slouch sitting, restricts the mobility of the cervical spine and aggravates the painful symptoms. A good sitting posture is constituted by a slightly extended thoracic spine. Therefore, active extension of the thoracic spine prior to cervical extension may improve cervical movements and restore cervical curvature.

 

It is believed that excessive pressure during flexion on the anterior aspect of the intervertebral discs pushes the nucleus pulposus posteriorly and causes herniations. Conversely, cervical lordosis might have the reverse effect�that is, decreases pressure on the anterior aspect of the discs and may create a suction effect which retracts the herniated contents. Therefore, a combination of short duration and repeated movements at the end of extension may serve as a suction pump and possibly retract the extruded content of the disc. Active cervical extension exercises, with an extended thoracic spine posture, may have been the key element in a home exercise programme to restore lordosis of the cervical spine and relieve radiculopathy symptoms in the current case. This may possibly have been due to the retraction of the herniated discs.

 

Spinal mobilisation refers to a gentle, oscillatory, passive movement of a spinal segment. These are applied to a spinal segment to gently increase the passive range of motion. It allows the patient to report aggravation of pain and to resist any unwanted movements. No mobilisation treatment was administered at C5�C6 level as palpation at this level was aggravating the symptoms. Segments below this level were mobilised with emphasis at C7�T1 level. Any treatment at the affected segment was likely to irritate the nerve root and thereby increase the inflammatory process.

 

Various interventions are reported for the treatment of prolapsed discs. Saal et al reported the use of traction, specific physical therapy exercise, oral anti-inflammatory medication and patient education in the treatment of 26 patients with herniated cervical discs (<4?mm) and reported significant improvement in outcomes for 24 patients. They observed that surgery for disc herniations occurs when a patient has significant myotomal weakness, severe pain or pain that persists beyond an arbitrary conservative treatment period of 2�8?weeks.

 

Spontaneous regressions of cervical disc protrusions are reported in the literature. However, spontaneous regressions of herniated cervical discs are speculated to be rare. Various factors related to regression are hypothesised and theorised. Pan et al summarised the factors related to the resorption of herniated disc as: the age of the patients; dehydration of the expanded nucleus pulposus; resorption of haematoma; revascularisation; penetration of herniated cervical disc fragments through the posterior longitudinal ligament; size of disc herniations; and existence of cartilage and annulus fibrosus tissue in the herniated material. Some studies on spontaneous regressions of discs reported that the patients were receiving physiotherapy. Physiotherapy interventions are not defined in any of these studies, however. Therefore, it is possible that disc regressions in these studies may be due to similar physiotherapy interventions as described here, or the patients were practising techniques and adopting postures as reported in the current case.

 

Learning Points

 

  • Thoracic spine mobilisation improves cervical spine biomechanics and can be considered in conjunction with other interventions in all painful conditions of the cervical spine.
  • Active extension of the thoracic spine facilitates movements of the cervical spine and may help regression of large prolapsed discs.
  • There is a possibility of retraction of herniated cervical discs through appropriate physiotherapy intervention.
  • Patient education ensures safety and compliance to therapist advice.
  • Meticulous assessment and patient feedback guides the therapist in selection of intensity of mobilisation.

 

Footnotes

 

Competing interests: None.

 

Patient consent: Obtained.

 

In conclusion,�physiotherapy, or physical therapy, is used to treat various injuries, diseases and disabilities, through the use of mechanical force and movements, manual therapy, exercise, electrotherapy, and through patient education and advice to restore and maintain function. As in the case above, physiotherapy can be recommended and considered as treatment before referring to surgical interventions of large cervical disc herniations. Information referenced from the National Center for Biotechnology Information (NCBI). The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

 

Curated by Dr. Alex Jimenez

 

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Additional Topics: Sciatica

 

Sciatica is referred to as a collection of symptoms rather than a single type of injury or condition. The symptoms are characterized as radiating pain, numbness and tingling sensations from the sciatic nerve in the lower back, down the buttocks and thighs and through one or both legs and into the feet. Sciatica is commonly the result of irritation, inflammation or compression of the largest nerve in the human body, generally due to a herniated disc or bone spur.

 

blog picture of cartoon paperboy big news

 

IMPORTANT TOPIC: EXTRA EXTRA: Treating Sciatica Pain

 

 

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References
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3.�Krauss J, Creighton D, Ely JD, et al.�The immediate effects of upper thoracic translatoric spinal manipulation on cervical pain and range of motion: a randomized clinical trial.�J Man Manipulative Ther2008;16:93�9.�[PMC free article][PubMed]
4.�Saal JS, Saal JA, Yurth EF.�Nonoperative management of herniated cervical intervertebral disc with radiculopathy.�Spine (Phila Pa 1976)�1996;21:1877�83.�[PubMed]
5.�Murphy DR, Beres JL.�Cervical myelopathy: a case report of a �near-miss� complication to cervical manipulation.�J Manipulative Physiol Ther�2008;31:553�7.�[PubMed]
6.�Leon-Sanchez A, Cuetter A, Ferrer G.�Cervical spine manipulation: an alternative medical procedure with potentially fatal complications.�South Med J�2007;100:201�3.�[PubMed]
7.�Scannell JP, McGill SM.�Disc prolapse: evidence of reversal with repeated extension.�Spine (Phila Pa 1976)�2009;34:344�50.�[PubMed]
8.�Gurkanlar D, Yucel E, Er U, et al.�Spontaneous regression of cervical disc herniations.�Minim Invasive Neurosurg�2006;49:179�83.�[PubMed]
9.�Mochida K, Komori H, Okawa A, et al.�Regression of cervical disc herniation observed on magnetic resonance images.�Spine (Phila Pa 1976)�1998;23:990�5; discussion 6�7.�[PubMed]
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11.�Westmark RM, Westmark KD, Sonntag VK.�Disappearing cervical disc. Case report.�J Neurosurg1997;86:289�90.�[PubMed]
12.�Pan H, Xiao LW, Hu QF.�Spontaneous regression of herniated cervical disc fragments and its clinical significance.�Orthop Surg�2010;2:77�9.�[PubMed]
13.�Teplick JG, Haskin ME.�Spontaneous regression of herniated nucleus pulposus.�AJR Am J Roentgenol1985;145:371�5.�[PubMed]
Close Accordion
Electroacupuncture vs. Medium-Frequency Electrotherapy for Sciatica

Electroacupuncture vs. Medium-Frequency Electrotherapy for Sciatica

Electroacupuncture: Before reviewing the data below, it is important as a practicing doctor of chiropractic to inform that�sciatica and discogenic lower back pain are two closely related health issues which collectively, can be a source of painful symptoms and discomfort as well as a cause of limited mobility among affected individuals. Discogenic disease, also known as degenerative disc disease, is characterized as the naturally-occurring deterioration of the spinal intervertebral discs. While discogenic disease commonly develops with age, other factors, such as injury can also lead to degenerative disc disease. In addition, degenerative disc disease may cause other complications including bulging or herniated discs

Furthermore, from years of experience caring for patients with this health issue, bulging or herniated discs are not necessarily the cause of the individual’s pain and discomfort. Symptoms are instead the result of compression or irritation from displaced disc material against the spinal cord or an exiting nerve root. Sciatica occurs if the nerve being compressed or irritated is the sciatic nerve, the largest nerve in the human body which branches off the lower spine, down into the legs. Two methods of treatment, electroacupuncture and medium-frequency electrotherapy were used in the following research study to determine whether symptoms of sciatica would improve with one treatment therapy over the other.

Abstract

Objective. To investigate the short- and long-term effects of electroacupuncture (EA) compared with medium-frequency electrotherapy (MFE) on chronic discogenic sciatica. Methods. One hundred participants were randomized into two groups to receive EA (n = 50) or MFE (n = 50) for 4 weeks. A 28-week follow-up of the two groups was performed. The primary outcome measure was the average leg pain intensity. The secondary outcome measures were the low back pain intensity, Oswestry Disability Index (ODI), patient global impression (PGI), drug use frequency, and�electroacupuncture acceptance. Results. The mean changes in the average leg pain numerical rating scale (NRS) scores were 2.30 (1.86�2.57) and 1.06 (0.62�1.51) in the EA and MFE groups at week 4, respectively. The difference was significant (P < 0.001). The long-term follow-up resulted in significant differences. The average leg pain NRS scores decreased by 2.12 (1.70�2.53) and 0.36 (?0.05�0.78) from baseline in the EA and MFE groups, respectively, at week 28. However, low back pain intensity and PGI did not differ significantly at week 4. No serious adverse events occurred. Conclusions. EA showed greater short-term and long-term benefits for chronic discogenic sciatica than MFE, and the effect of EA was superior to that of MFE. The study findings warrant verification. This trial was registered under identifier ChiCTR-IPR-15006370.

Introduction: Electroacupuncture

Sciatica is defined as radicular leg pain localized to the dermatological distribution of a pathologically affected nerve root. Almost all discogenic sciatica is induced by lumbar disc herniation (LDH) and may be accompanied by neurological deficits, such as leg pain, leg paresthesia, disability, and low back pain. The estimated prevalence of sciatica ranges from 1.2 to 43% in various regions. Discogenic sciatica, which accounts for nearly 90% of sciatica, is a major cause of morbidity; moreover, it has a considerable impact on the economy due to both loss of work and the high costs of health care and societal support for the affected individual and his/her family. Current treatments for discogenic sciatica primarily include surgical and conservative treatments. Although discectomy is a more effective treatment than other treatments for patients with severe discogenic sciatica, in patients with less severe symptoms, surgery or conservative treatments appear to be equally effective. Discectomy should be avoided during initial treatment due to its high cost and its association with a higher incidence of postoperative complications, such as the loss of spine stability and extensive peridural fibrosis. Conservative measures comprise the first-line treatment strategy for managing radicular pain due to disc herniation. Regarding cost-effectiveness, the regimes that employ stepped approaches based on an initial treatment with conservative management have been recommended. However, many conservative treatments have no explicit curative effect, such as benzodiazepines, corticosteroids, traction, and spinal manipulation, which may be ineffective or less effective. Moreover, the long-term efficacy of analgesic drugs is not enduring, and intolerable side-effects, such as addiction, stomach ulcers, and constipation, occur frequently in patients with discogenic sciatica. Thus, based on recent information, the short- and long-term efficacy of conservative treatment should be evaluated.

Electroacupuncture (EA) has been used to treat sciatica for many decades in China. Several studies have reported that electroacupuncture EA may effectively treat neuropathic pain and relieve sciatica symptoms. However, no clear clinical evidence exists to support the application of acupuncture or�electroacupuncture in the treatment of discogenic sciatica according to the guideline for the diagnosis and treatment of lumbar disc herniation. Recently, two meta-analyses concerning sciatica treatment with acupuncture showed that previous studies on acupuncture were flawed and that the strength of the evidence was suboptimal; thus, studies of higher quality with longer-term follow-up are needed to clarify the long-term effect of acupuncture in sciatica patients.

 

Image of electroacupuncture being applied to patient.

 

Compared with manual acupuncture,�electroacupuncture treatment is capable of increasing the stimulation frequency and intensity in a controlled and quantifiable manner; moreover, its effect is superior to manual acupuncture for alleviating pain and improving paresthesia and dysfunction. Medium-frequency electrotherapy (MFE) is similar to transcutaneous electrical nerve stimulation (TENS) and may relieve pain and related symptoms. MFE works through electrostimulation of an electrode placed on the skin, and a battery powered device provided a small current to produce a tingling sensation. Several studies found that the effects obtained with 50?Hz EA were superior to those using 2?Hz EA. EA and MFE using the same frequency (50?Hz) at the same location were employed in another trial. The major difference between the two trial groups was the specific impact of needle penetration, with�electroacupuncture using needle penetration and MFE administered via nonpenetrating electrostimulation.

 

Image of medium frequency electrotherapy being applied to patient.

 

This study was a comparative trial that evaluated the effectiveness of electroacupuncture versus MFE for the treatment of chronic discogenic sciatica; these treatments are the most frequently used treatments for this disease in China. We explored the ability of�electroacupuncture to alleviate leg pain, low back pain, and dysfunction at various evaluation time points, which included an assessment of the long-term efficacy of electroacupuncture. We also assessed the patient global impression (PGI) and acceptance of�electroacupuncture compared with MFE and reports of adverse events.

Methods

Participants

The study commenced on May 28, 2015, and was completed by July 30, 2016, at the South Area of Guang’anmen Hospital, China Academy of Chinese Medical Sciences. Discogenic sciatica was diagnosed according to the criteria of the North American Spine Society. The inclusion criteria were as follows: (1) individuals aged 18 to 70 years; (2) participants whose sciatica symptoms correlated with magnetic resonance imaging (MRI) or computed tomography (CT) findings of lumbar disc herniation; (3) participants whose symptoms of leg pain lasted more than 3 months; (4) participants who agreed to follow the trial protocol; and (5) participants who could complete the study treatment and assessments. The exclusion criteria were as follows: (1) participants with severe progressive neurological symptoms (e.g., cauda equina syndrome and progressive muscle weakness); (2) participants who had undergone surgery for lumbar disc herniation within 6 months; (3) participants with symptoms caused by conditions other than lumbar disc herniation that might lead to radiating pain in the leg; (4) participants with pain in both legs; (5) participants with cardiovascular, liver, kidney, or hematopoietic system diseases, mental health disorders, or cancer for whom EA might be inappropriate or unsafe; (6) participants who had received EA or electrotherapy within the past week; (7) women who were pregnant or lactating; (8) participants who were participating in other clinical trials; and (9) participants with a pacemaker, metal allergy, or severe fear of needles.

Study Design

This was a single-center, prospective, controlled, randomized trial conducted in patients with chronic discogenic sciatica. This trial was approved by the Ethics Committee of Guang’anmen Hospital of China Academy of Chinese Medical Sciences (approval number 2015EC042) on May 26, 2015, and was registered on May 7, 2015, at http://www.chictr.org.cn/ (ref. ChiCTR-IPR-15006370). Written informed consent was obtained from each participant or their legal representative. All participants were required to be able to understand written instructions and able to complete the pain assessment forms.

Randomization and Allocation Concealment

The randomization was performed by the Drug Clinical Trial Office affiliated with Guang’anmen Hospital using a computerized random number generator. Opaque, sealed envelopes were numbered consecutively, and all the sealed envelopes were maintained by a researcher who was not involved in the treatment procedure or data analysis. After informed consent was obtained, an envelope was opened by the researcher according to the patient’s order of entry into the trial, and the assigned treatment was offered to the participant. The outcome assessors and statisticians were blinded to the allocation. Two copies of the envelopes were maintained to prevent the researchers from deviating from the randomization.

Intervention

The treatments were initiated one week after participant randomization. All participants received health education on sciatica, such as using a hard bed and losing weight. During the trial, the use of analgesic drugs or other treatments was not permitted. The details of prior drug use (including dose and time) were recorded in the medication record form. Huatuo Brand stainless steel needles (0.3 � 100?mm, Suzhou Medical Appliance Factory in China, CL) and a G6805-2 electric stimulator (Shanghai Huayi Medical Instrument in China Co., Ltd.) were used in the EA group, and the Quanrikang type J48A computerized intermediate-frequency therapy apparatus (Beijing Huayi New Technical Institute in China) was used in the MFE (control) group. The acupuncture procedures were performed in accordance with the Standards for Reporting Interventions in Clinical Trials of Acupuncture (STRICTA) guidelines. EA was performed by a trained clinician with more than 2 years of experience with acupuncture manipulation. The acupuncture regimen was based on our own pilot trial and specialist consensus. The acupoints of the affected side (DaChangShu, BL25) and the bilateral JiaJi (Ex-B2) corresponding to LDH were included in the EA group. The DaChangShu (BL25) acupoint was located according to the World Health Organization Standardized Acupuncture Point Location; JiaJi (Ex-B2) is located in the lumbar region 0.5 inches lateral to the posterior median line. After the participants assumed a prone position, the needle was vertically inserted rapidly into the JiaJi (Ex-B2) points. Then, the needle was inserted to a depth of approximately 1.5 inches. The participants were expected to experience soreness and distension transmitted to the leg. The needle was inserted straight into the DaChangShu on the BL25 point to a depth of 3 inches; then, the acupuncturist manipulated the needle with a lifting, thrusting, and twirling maneuver until feelings of soreness and distension were felt and radiated to the hips and lower limbs. The electric apparatus was applied to the JiaJi (Ex-B2) and DaChangShu (BL25) acupoints with a dilatational wave using a 50?Hz frequency and a comfortably tolerated maximum current intensity.

Participants assigned to the control group received MFE, which was administered by an experienced therapist different from the one delivering the EA. The acupoints and frequencies used in the MFE group were the same as those used in the EA group. After two pairs of 107 � 72?mm electrodes were placed on the acupoints, the MFE apparatus was turned on and muscle contractions were observed under the energizing electrode. The intensity was adjusted to the maximum current intensity tolerable at a comfortable level. The treatments in both groups were performed once daily for 5 sessions/week for the first 2 weeks and followed by 3 sessions/week for the following 2 weeks, with each session lasting 20 minutes.

Data Collection

The data in the trial were obtained from the case report forms recorded by the investigator. The participants’ demographic, clinical, and radiological characteristics were recorded. The diagnosis of lumbar disc herniation was confirmed after a review of the patient’s MRI or CT scan by two experienced musculoskeletal radiologists. Additionally, the diagnosis of discogenic sciatica was confirmed after a clinical examination by a consultant orthopedic physician. Investigators entered the collected data into the case report forms. At baseline and during the treatment period, the forms were completed by the participants under the guidance of a full-time staff member. During the follow-up period (16th and 28th weeks), the participants answered the questionnaire by phone.

Clinical Assessments

The primary outcome was the change from baseline in the average leg pain numerical rating scale (NRS) score at week 4. The secondary outcomes included average leg pain intensity at weeks 1, 2, 3, 16, and 28; low back pain intensity at weeks 2, 4, 16, and 28; Oswestry Disability Index (ODI) questionnaire results at weeks 2, 4, 16, and 28; PGI of improvement at weeks 2 and 4; drug use frequency at weeks 2 and 4; and EA acceptance evaluation at week 4. Adverse events were monitored and documented during the treatment and follow-up periods based on the investigator’s inquiry and reports by the participants themselves.

Primary Outcome Measure: The change from baseline in the average leg pain NRS score was measured using an 11-point numerical rating scale assessing leg pain, with 0 representing no pain and 10 representing the most severe pain. Participants were asked to rate their average leg pain intensity over the prior 24 hours. The average leg pain NRS score at week 4 was equal to the mean value of the NRS scores obtained at the three treatment sessions during the 4th week.

Secondary Outcome Measures: The following secondary outcome measures were determined. (1) The average leg pain intensity at other time points was measured by the NRS. The methods used to measure the secondary outcomes were the same as those used to measure the primary outcome except for the evaluation point. (2) Low back pain intensity was measured using an 11-point NRS. Participants rated their low back pain over the prior 24 hours with a pain NRS. The low back pain NRS score at the time of evaluation was equal to the mean value of the NRS scores in the previous 24 hours. (3) The ODI comprises 10 questions concerning the intensity of pain and daily activities. Each item contains 6 options. A higher score change in the ODI from baseline indicated more serious dysfunction. (4) The PGI improvement score was used to evaluate the improvement in pain and functional disability, and the improvement reported by patients was assessed using a 7-point scale (1 represents greatly improved and 7 represents marked worsening). (5) The frequency of drug use was recorded. The patients’ use of medications or nonprescription drugs during the trial was evaluated using a questionnaire to assess the influence of drugs. (6) To investigate which treatment was preferred, EA or MFE acceptance was assessed at week 4. A 4-point scale was used, with 1 representing �very difficult to accept� and 4 representing �very easy to accept.� (7) Adverse events were assessed using a questionnaire at the end of treatment and active reporting by the participants during treatment.

Sample Size and Statistical Analysis

The sample size calculation was based on the mean value of the leg pain intensity NRS score. According to our pilot trial, the decreases in the mean value of the leg pain intensity NRS scores in the EA and MFE groups at week 4 were 3.41 � 3.46 and 1.57 � 1.24, respectively. Our pilot study was an independent study conducted by our research team before this study, with no crossover participants between the previous study and the current study. We used PASS Version 11.0 (International Business Machines Corporation, China) software to calculate a sample size of 50 for each group to provide 90% power to detect a difference of 1.8 between the groups with a two-sided 5% level of significance, allowing for a 20% dropout rate and with the participants receiving the treatments and completing the follow-up.

The statistical analysis was performed using SPSS Version 22.0 (International Business Machines Corporation, China) software. Two-sided tests were used for all statistical analyses. The level of significance was established at 0.05. All patients who accepted randomization were included in the analysis. All data collected from the participants were included in the statistical analysis, and missing data were replaced by the last observed value. However, the outcomes for which no data except for the baseline assessment data were available were not included in the final analysis. The 100 participants included at least 1 treatment session. Thus, we analyzed the data of all the participants as the primary outcome, which was measured after the first treatment session. However, the secondary outcomes were evaluated at week 2, and 13 participants dropped out before week 2 without any data after treatment except for leg pain NRS scores. So the 13 participants were not included in the statistical analysis of secondary outcomes. Continuous data were represented by means and standard deviations (SD) if the data were normally distributed or by the medians and interquartile ranges if the data were skewed, or by means and 95% confidence intervals (CIs); categorical data were represented by percentages or 95% CIs. For comparisons with baseline data, a paired t-test was used for continuous data and a nonparametric test was used for categorical data. To compare the two independent samples, T tests or Mann�Whitney U tests were used to compare continuous variables, and chi-square tests or Fisher’s exact tests were used to compare categorical variables, as appropriate. A repeated measures analysis of variance or nonparametric test was used to compare differences in data between the groups at multiple time points.

Results

Dr. Alex Jimenez’s Insight

The short- and long-term effects of electroacupuncture (EA) versus medium-frequency electrotherapy (MFE) were evaluated to determine which of the two treatments, if not both, could most effectively be used to help improve symptoms of sciatica associated with degenerative disc disease. The research study was conducted with the participation of a variety of patients with symptoms of discogenic sciatica, over several types of interventions. Clinical assessments and data was collected throughout two different research study outcomes in order to gather the most valuable results. Sample size and statistical analysis were also considered before analyzing the data of all the participants and recording the results. The final outcome of the research study has been described in detail below.

Recruitment

A total of 138 participants with chronic sciatica due to lumbar disc protrusion were screened, among whom 36 were rejected due to the exclusion criteria and 2 withdrew from the study. Therefore, 100 eligible patients were randomly assigned to the experimental (EA) group (n = 50) or the control (MFE) group (n = 50) at a ratio of 1?:?1. Eight participants withdrew from the study during the course of treatment due to the presence of aggravating symptoms, 1 participant exited the study due to travel, 1 participant withdrew due to an unsatisfactory curative effect, and 3 participants were lost to follow-up. In the dropout participants, no additional data except for the leg pain NRS scores were available because the evaluation period was not reached. According to the principle of ITT analysis, we analyzed the data of all 100 subjects for the leg pain NRS scores and then performed a sensitivity analysis of these 13 subjects to verify the reliability of the results. Details are provided in Figures ?1 and ?2.

 

Figure 1 Time Frame of Each Period

Figure 1: Time frame of each period. Figure 1 shows the time frame of baseline period, treatment period, and follow-up period.

 

Figure 2 Study Flow Diagram

Figure 2: Study flow diagram.

 

Characteristics of the Participants

Table 1 shows the baseline data of the 100 participants. The mean age of all patients was 52.67 � 12.72 years. The mean duration was 48 (12�120) months. The duration of 2 participants in the electroacupuncture group was one month, and the duration of 1 participant was one month in the MFE group. The baseline demographics, body measurement data, and baseline outcomes are listed in Table 1. No significant differences in baseline demographics and clinical characteristics were observed (Table 1).

Table 1 Baseline Demographic and Clinical Characteristics of the Study Population

Table 1: Baseline demographic and clinical characteristics of the study population.

Primary Outcome

The decrease in the leg pain NRS scores from baseline to week 4 differed significantly between the EA group (n = 50) and the MFE group (n = 50) (P < 0.001). As shown in Table 2, the mean change from baseline to the 4th week in the average leg pain intensity NRS score was 2.30 (1.86�2.75) in the EA group and 1.06 (0.62�1.51) in the MFE group. At four weeks, the two groups both exhibited significantly greater reductions in NRS scores compared with baseline; however, the EA group showed a more significant decrease than the MFE group (Table 2).

Table 2 Changes from Baseline in Primary Outcomes

Table 2: Changes from baseline in primary outcomes.

Secondary Outcomes

EA showed a more significant improvement in the leg pain scores at all the evaluation points compared with that observed in the MFE group (P < 0.001) (Figure 3 and Table 2). The EA group showed a significant decrease compared to the baseline in the leg pain, low back pain, and ODI scores at weeks 2, 4, 16, and 28 (all P < 0.05). Conversely, the MFE group did not show a significant improvement compared to the baseline in the low back pain score at weeks 16 and 28 (all P = 0.096). Significant reductions in the leg pain and ODI questionnaire scores were detected in the EA group at multiple time points compared with the MFE group (all P < 0.05). The EA group exhibited greater improvement. However, a negligible change was detected at multiple time points in the low back pain score and PGI between the two groups (all P > 0.05). Furthermore, no significant difference was detected in the frequency of drug use between the two groups at weeks 2 and 4 (all P > 0.05) in our trial. Consequently, an EA or MFE acceptance assessment administered after 4 weeks of intervention showed that EA was accepted as readily as MFE with no significant differences between the two groups (P = 0.055). The corresponding data are shown in Tables ?2 and ?3.

 

Figure 3 Change of Leg Pain Score in Two Groups

Figure 3: Change of leg pain score in two groups.

 

Table 3 Secondary Outcomes of the Interventions

Table 3: Secondary outcomes of the interventions.

A sensitivity analysis was performed based on the leg pain NRS score. We excluded 13 participants who received fewer treatment sessions (less than 10) and analyzed the data of the remaining 87 participants. This sensitivity analysis result showed that our original results were stable and reliable.

Adverse Events

No serious adverse events occurred in either group. One participant (2%) in the experimental group developed a subcutaneous hematoma. Two participants (4%) in the MFE group reported skin redness and itching. All adverse events disappeared without additional intervention.

Discussion

The results of this trial showed significant differences in the change in the leg pain NRS and ODI questionnaire scores in the EA group compared with those in the MFE group in the short-term treatment period and long-term follow-up. However, the EA group did not show a greater decrease in low back pain scores and PGI compared with the MFE group. These changes indicated that the effect of EA was superior to the effect of MFE in improving leg pain and dysfunction, whereas the effect of EA was not superior to that of MFE in relieving low back pain and systemic symptoms.

The leg pain NRS score showed a significant difference compared with the MFE group at week 4: a mean difference of 1.24 points was detected between the two groups. On average, a reduction of approximately 2�3.5 points in the NRS score represents a minimal clinically important difference (MCID) for acute and chronic pain. The change in the leg pain NRS score in the EA group at week 4 did not show a clinically important significant difference compared with the MFE group. However, our control group was not a placebo but a positive treatment. An effect size of 1.24 is generally considered as the large effect. The MCID of the ODI score ranged from 4 to 16 points, and the decline of the ODI score in the EA group reached the MCID criterion with a mean reduction of 5.69 compared with the MFE group. The results implied that the clinical effect of EA appears superior to the effect of MFE in improving dysfunction caused by sciatica. However, low back pain did not show a significant and clinically important difference, with a mean reduction in the NRS score of 0.58 at week 4 compared with the MFE group. It may be associated with a better response to pain around the electrodes by MFE. In our study, a long-term follow-up was performed. At week 28, the MFE group did not show significantly decreased leg pain compared to the baseline, whereas the EA group showed significantly decreased leg pain compared to the baseline. The difference between the two groups was significant. The results implied that the effect of EA but not MFE lasted at least 28 weeks. The low back pain and ODI scores also indicated that the long-term effects of EA were superior to those of MFE because the effects of EA persisted after the discontinuation of treatment.

In our trial, the leg pain NRS score was reduced by 49% compared with the baseline in the EA group at week 4; however, a greater increase in the response rate (69%) was reported in a trial comparing EA with TENS for sciatica during the treatment period. Another trial conducted in China demonstrated that the decrease in the mean value of the leg pain intensity NRS score in the EA group was 4.65 � 6.37 at week 4, which was higher than the value of 2.30 (1.86�2.75) obtained in our trial at the same time point. In a pilot trial comparing EA with physical therapy for symptomatic lumbar spinal stenosis (LSS), pain in the back and leg showed small improvements at 3 months. However, the ODI scores were different from the scores obtained in our study. No significant differences between the ODI scores of the two groups were observed at the 3-month follow-up time point in the study. The differences between the results of the two studies might be explained by the use of different acupoints, needling depth, manipulation methods, EA parameters, number and frequency, training and clinical experience level of the practitioners, missing data, and sample size.

Very few participants in either group took analgesics during the trial, and only anti-inflammatory drugs were used. This result might indicate that most of the participants believed that the analgesics would not alleviate pain and were concerned about adverse events. Most participants expected that EA or MFE would be beneficial and were aware that these techniques are relatively safe. According to the PGI, the participants perceived no difference between EA and MFE. Approximately 87.2% of the participants in the EA group reported that they were aided by EA at the 4th week, which was similar to the 83.5% of participants in the MFE group. The treatment acceptance assessment showed that none of the participants considered either treatment difficult to accept. Furthermore, 70.2% of the participants in the EA group reported that EA was easy or very easy to accept, similar to 72.5% of the participants in the MFE group. These results indicated that EA and MFE were both easy to accept and popular in China.

Leg pain is a typical symptom in sciatica patients, and the leg pain intensity NRS score reflects the improvement in this symptom in these patients. The leg pain NRS score may reasonably be used for the primary measurement of the therapeutic effect. Because studies have shown that most acupuncture therapy for sciatica lasts 1 to 4 weeks, we selected the change in the average leg pain intensity NRS score from baseline to the 4th week as the main measurement. In the previous literature, although primary outcome was generally measured at a certain time point, the average score reflected the average level of pain during the last week, which was thus more meaningful than other methods of measuring single time point due to recurrence of sciatica. The control group underwent MFE, which exerts its effect via the stimulation or activation of physiological events by applying energy, thereby producing therapeutic benefits that facilitate pain relief. Mechanisms leading to pain relief may be due to a variety of peripheral effects of control activity, on the spinal and spinal nervous system. The comparison between EA and MFE may reveal differences in response to needle penetration using the same electrostimulation. Because the stimulation parameters, particularly the frequency, are important factors that affect the outcome and because the effect of medium-frequency electrotherapy is better than the effect of low frequency electrotherapy, we used the same medium frequency and location in the study to ensure that the two groups were comparable.

Many studies have investigated the mechanism of EA. EA has been reported to relieve the symptoms of sciatica and increase the pain threshold in humans. Several previous studies showed that EA inhibited the primary afferent transmission of neuropathic pain and that deep EA stimulation improved the pathological changes and function of the injured sciatic nerve in rats. Other studies have suggested that descending inhibitory control, changes in nerve blood flow, or the inhibition of activity by nerve endings may be involved in the mechanism associated with the efficacy of EA. Long-lasting alleviation of pain has been suggested to be closely related to the muscle tension improvement provided by EA. A meta-analysis of patients with chronic pain showed that approximately 90% of the benefit of acupuncture was sustained at 12 months. The reason for the cumulative and sustained effects of acupuncture may be associated with the brain response and the cumulative duration of acupuncture stimulation.

This trial has several limitations. First, the participants and acupuncturists could not be blinded due to the significant difference between the two treatments. However, we followed rigorous quality control procedures in other aspects of the methodology. For example, a strict randomization and allocation concealment protocol was adopted. The outcome assessors and statisticians were blinded to the allocation. Second, some of the outcome measures of the trial were subjective. To address subjectivity, a short training session for the patients on the outcome reporting was held before they began the trial, and all subjective outcomes were based on the patient self-report forms. Third, we did not include a placebo control in the present preliminary study because several sham acupuncture randomized controlled trials (RCTs) have been performed to study acupuncture therapy in patients with sciatica. We considered that the use of a placebo did not provide sufficient sensitivity and may not have met ethical guidelines. Fourth, because we did not explore the effect of electroacupuncture EA on various degrees of pain severity, which degree of sciatica was most sensitive to EA was unclear. Subgroup analyses based on sciatica severity should be performed in a future multicenter, large-sample, randomized controlled study.

Conclusions: Electroacupuncture

This randomized controlled clinical trial demonstrated that the short-term and long-term effectiveness of electroacupuncture were superior to those of MFE in improving the symptoms of leg pain and dysfunction caused by chronic discogenic sciatica; moreover, the long-term effect of electroacupuncture was superior to that of MFE in improving low back pain. The results also suggested that the effect of electroacupuncture but not MFE lasted at least 28 weeks. No serious adverse events occurred in either group. Further studies are needed to examine the effectiveness of electroacupuncture relative to various physical therapy methods for patients with discogenic sciatica.

Acknowledgments

This trial was supported by the South Area of Guang’anmen Hospital science fund (Funding no. Y2015-07).

Conflicts of Interest

The authors have no conflicts of interest to declare.

In conclusion,�the effectiveness of electroacupuncture was superior to MFE towards improving the symptoms of discogenic sciatica. Although the research study concluded that electroacupuncture was superior to medium-frequency electrotherapy when treating for sciatica caused by degenerative disc disease, both types of treatments should still be used accordingly, depending on the patient’s condition and whether the specific treatment is best recommended by a healthcare professional. Electroacupuncture and medium-frequency electrotherapy are the most common types of treatment options for symptoms of sciatica associated with the deterioration of the spinal intervertebral discs. Information referenced from the National Center for Biotechnology Information (NCBI). The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

Curated by Dr. Alex Jimenez

 

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Additional Topics: Sciatica

Sciatica is referred to as a collection of symptoms rather than a single type of injury or condition. The symptoms are characterized as radiating pain, numbness and tingling sensations from the sciatic nerve in the lower back, down the buttocks and thighs and through one or both legs and into the feet. Sciatica is commonly the result of irritation, inflammation or compression of the largest nerve in the human body, generally due to a herniated disc or bone spur.

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IMPORTANT TOPIC: EXTRA EXTRA: Treating Sciatica Pain

 

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Vertebral Artery Dissection Found During Chiropractic Examination

Vertebral Artery Dissection Found During Chiropractic Examination

Acknowledging the subsequent information below,�approximately more than 2 million people are injured in automobile accidents each year and among those incidents, the majority of the people involved are diagnosed with whiplash and/or neck injury by a healthcare professional. When the complex structure of the neck is subjected to trauma, tissue damage and other medical complications may occur. Vertebral artery dissection, or VAD, is characterized by a flap-like tear on the inner lining of the vertebral artery in charge of supplying blood to the brain. After the tear, blood can then enter the arterial wall and form a blood clot, thickening the artery wall and often impeding blood flow.

 

Through years of experience practicing chiropractic care,�VAD may often follow after trauma to the neck, such as that which occurs in an automobile accident, or whiplash injury. The symptoms of vertebral artery dissection include head and neck pain as well as intermittent or permanent stroke symptoms, such as difficulty speaking, impaired coordination and loss of vision. VAD, or vertebral artery dissection, is generally diagnosed with a contrast-enhanced CT or MRI scan.

 

Abstract

 

A 30-year-old woman presented to an emergency department with sudden onset of transient loss of left peripheral vision. Owing to a history of migraine headaches, she was released with a diagnosis of ocular migraine. Two days later, she sought chiropractic care for the chief symptom of severe neck pain. The chiropractor suspected the possibility of vertebral artery dissection (VAD). No manipulation was performed; instead, MR angiography (MRA) of the neck was obtained, which revealed an acute left VAD with early thrombus formation. The patient was placed on aspirin therapy. Repeat MRA of the neck 3?months later revealed resolution of the thrombus, without progression to stroke. This case illustrates the importance for all healthcare providers who see patients with neck pain and headache to be attentive to the symptomatic presentation of possible VAD in progress.

 

Background

 

Vertebral artery dissection (VAD) leading to stroke is an uncommon but potentially serious disorder. The incidence of stroke related to the vertebrobasilar system varies from 0.75 to 1.12/100?000 person-years. The pathological process in VAD typically involves dissection of the wall of the artery followed sometime later by thrombus formation, which may cause arterial occlusion or may lead to embolisation, causing occlusion of one or more of the distal branches off the vertebral artery, including the basilar artery, which can be catastrophic. VAD typically occurs in patients who have an inherent, transitory weakness in the arterial wall. In at least 80% of cases, the initial symptoms include neck pain with or without headache.

 

Many patients with VAD may in the early stages present to chiropractors seeking relief from neck pain and headache, without realising they are experiencing VAD. In many of these cases, the patient later develops a stroke. Until recently, it was assumed that the dissection (and subsequent stroke) was caused by cervical manipulative therapy (CMT). However, while early studies found an association between visits to a chiropractor and subsequent stroke related to VAD, recent data suggest that this relationship is not causal.

 

This case report is illustrative of the scenario in which a patient with an undiagnosed VAD in evolution consulted a chiropractor for neck pain and headache. After thorough history and examination, the chiropractor suspected VAD and did not perform CMT. Instead, the patient was referred for further evaluation, which detected a VAD in progress. Prompt diagnosis and anticoagulant treatment were thought to have averted progression to a stroke.

 

Case Presentation

 

A 30-year-old otherwise healthy woman consulted a chiropractor (DBF), reporting of right-sided neck pain in the suboccipital region. The patient reported that, 3?days previously, she had gone to the local hospital emergency department (ED) because of the sudden onset of loss of left peripheral vision. The visual symptoms interfered with her ability to see through her left eye; this was accompanied by �numbness� in her left eyelid. About 2?weeks prior to this ED visit, she had experienced an episode of acute left-sided neck pain with severe left-sided headache. She also related a history of migraine headache without prodrome. She was released from the ED with a tentative diagnosis of ocular migraine. She had never been previously diagnosed with ocular migraine, nor had she ever experienced any visual disturbances with her previous migraines.

 

Shortly after the left-sided ocular symptoms resolved, she suddenly developed right-sided neck pain without provocation, for which she sought chiropractic treatment. She also reported a transient episode of right-sided visual disturbance occurring that same day as well. This was described as sudden blurriness that was of short duration and resolved spontaneously earlier in the day of her presentation for chiropractic examination. When she presented for the initial chiropractic examination, she denied current visual disturbance. She said that she was not experiencing any numbness, paraesthesia or motor loss in the upper or lower extremities. She denied ataxia or difficulty with balance. Medical history was remarkable for childbirth 2� months prior to initial presentation. She stated that her migraine headaches were associated with her menstrual cycle. Family history was remarkable for a spontaneous ascending thoracic aortic aneurysm in her older sister, who was about 30?years of age when her aneurysm had occurred.

 

Investigations

 

Based on the history of sudden onset of severe upper cervical pain and headache with visual disturbance and ocular numbness, the DC was concerned about the possibility of early VAD. Urgent MR angiography (MRA) of the neck and head, along with MRI of the head, was ordered. No cervical spine examination or manipulation was performed because of the suspicion that the neck pain was related to VAD rather than to a �mechanical� cervical disorder.

 

MRA of the neck demonstrated that the left vertebral artery was small and irregular in calibre, extending from the C7 level cephalad to C2, consistent with dissection. There was a patent true lumen with a surrounding cuff of T1 hyper-intensity, consistent with dissection with subintimal thrombus within the false lumen (Figures 1 and ?2). MRI of the head with and without contrast, and MRA of the head without contrast, were both unremarkable. Specifically, there was no intracranial extension of dissection or evidence of infarction. MR perfusion of the brain revealed no focal perfusion abnormalities.

 

Figure 1 Axial Proton Density Image - Image 1

Figure 1: Axial proton density image demonstrates circumferential hyper-intensity surrounding the left cervical vertebral artery (representing the false lumen). Note decreased calibre of true lumen (black flow void) with respect to the right vertebral artery.

 

Figure 2 Axial Image from Three Dimensional Time of Flight MRA - Image 2

Figure 2: Axial image from three-dimensional time-of-flight MRA demonstrates T1 hypointense dissection flap separating the true lumen (lateral) from the false lumen (medial). MRA, MR angiography.

 

Differential Diagnosis

 

The ED released the patient with a tentative diagnosis of ocular migraine, due to her history of migraine headaches. However, the patient stated that the left-sided headache was atypical��like nothing I’ve ever experienced before.� Her previous migraines were associated with her menstrual cycle, but not with any vision changes. She had never been previously diagnosed with ocular migraine. MRA of the cervical region revealed that the patient actually had an acute dissection with thrombus formation in the left vertebral artery.

 

Treatment

 

Owing to the potential of impending stroke associated with an acute VAD with thrombus formation, the patient was admitted to the neurology stroke service for close neurological monitoring. During her admission, the patient did not experience any recurrence of neurological deficits and her headaches improved. She was discharged the following day with a diagnosis of left VAD and transient ischaemic attack. She was instructed to avoid vigorous exercise and trauma to the neck. Daily aspirin (325?mg) was prescribed, to be continued for 3�6?months after discharge.

 

Outcome and Follow-Up

 

After discharge from the stroke service, the patient had no recurrence of headache or visual disturbances, and her posterior neck pain symptoms resolved. Repeat imaging was performed 3?months after presentation, which demonstrated improved calibre of the cervical left vertebral artery with resolution of the thrombus within the false lumen (Figure 3). Imaging of the intracranial compartment remained normal, without evidence of interval infarction or perfusion asymmetry.

 

Figure 3 Maximum Intensity Projection MIP Images - Image 3

Figure 3: Maximum intensity projection (MIP) images from three-dimensional time-of-flight MRA (left image is at time of presentation and right image is at 3-month follow-up). The initial imaging demonstrates markedly diminutive calibre of the left vertebral artery

 

Discussion

 

The pathophysiological process of VAD is thought to start with degeneration of the tissues at the medial-adventitial border of the vertebral artery, leading to the development of microhaematomata within the wall of the artery and, eventually, arterial tear. This can lead to leakage of blood into the arterial wall, causing occlusion of the lumen with subsequent thrombus formation and embolisation, resulting in stroke related to one of the branches of the vertebral artery. This pathological process is similar to that of spontaneous carotid artery dissection, spontaneous thoracic aortic dissection and spontaneous coronary artery dissection. All these conditions tend to occur in younger adults and some have speculated that they may be part of a common inherited pathophysiological process. Notable in this case is the fact that the patient’s older sister had experienced a spontaneous thoracic aortic aneurysm (probably a dissection) at around the same age (30?years) as this patient was when she experienced her VAD.

 

While the dissection is often sudden, the luminal compromise and complications of VAD can develop gradually leading to variable symptoms and presentation, depending on the stage of the disease. The dissection itself, which develops some time before the onset of neural ischaemia, can cause stimulation of nociceptive receptors within the artery, producing pain that is most commonly felt in the upper cervical spine or head. Only after the pathophysiological process progresses to the point of complete arterial occlusion or thrombus formation with distal embolisation does the full manifestation of infarction occur. However, as illustrated in this case, neurological symptoms can develop early in the process, particularly in cases in which the true lumen demonstrates significant calibre decrease secondary to compression.

 

There are several interesting aspects to this case. First, it highlights the importance of spine clinicians being alert to the possibility that what may appear to be typical �mechanical� neck pain could be something potentially more sinister, such as VAD. The sudden onset of severe suboccipital pain, with or without headache, and accompanying brainstem related neurological symptoms, should alert the clinician to the possibility of VAD. As in the case reported here, patients with a history of migraine will typically describe the headache as different from their usual migraine. A careful neurological examination should be performed, looking for possible subtle neurological deficits, although the neurological examination will often be negative in the early stages of VAD.

 

Second, a triad of symptoms raised concern that the patient might be experiencing a VAD in progress. The symptom triad included: (1) spontaneous onset of severe upper cervical pain; (2) severe headache that was distinctly different from the patient’s usual migraine headaches; and (3) brainstem-related neurological symptoms (in the form of transient visual disturbance). Notably, careful neurological examination was negative. Nonetheless, the history was of sufficient concern to prompt immediate investigation.

 

When VAD is suspected but no frank signs of stroke are present, immediate vascular imaging is indicated. While the optimal imaging evaluation of VAD remains controversial, MRA or CTA are the diagnostic studies of choice given their excellent anatomic delineation and ability to evaluate for complications (including infarction and changes in brain perfusion). Some advocate the use of Doppler ultrasound; however, it has limited utility given the course of the vertebral artery in the neck and limited evaluation of the vertebral arteries cephalad to the origin. Additionally, ultrasound imaging is unlikely to allow visualisation of the dissection itself and thus can be negative in the absence of significant arterial occlusion.

 

Third, this case is interesting in light of the controversy about cervical manipulation as a potential �cause� of VAD. While case reports have presented patients who have experienced stroke related to VAD after cervical manipulation, and case�control studies have found a statistical association between visits to chiropractors and stroke related to VAD, further investigation has indicated that the association is not causal. Cassidy et al found that a patient who experiences stroke related to VAD is just as likely to have visited a primary care practitioner as to have visited a chiropractor prior to having the stroke. The authors suggested that the most likely explanation for the statistical association between visits to chiropractors and subsequent VAD is that a patient who experiences the initial symptoms of VAD (neck pain with or without headache) seeks medical attention for these symptoms (from a chiropractor, primary care practitioner, or another type of practitioner), then subsequently experiences the stroke, independent of any action taken by the practitioner.

 

It is important to note that, while there have been reported cases of carotid artery dissection after cervical manipulation, case�control studies have not found this association. The initial symptoms of carotid dissection (neurological symptoms, with neck and head pain less common than VAD), aortic dissection (sudden onset of severe, �tearing� pain) and coronary artery dissection (acute severe chest pain, ventricular fibrillation) are likely to cause the individual to immediately seek ED care, rather than seek chiropractic care. However, VAD has seemingly benign initial symptoms�neck pain and headache�which are symptoms that commonly cause patients to seek out chiropractic care. This may explain why only VAD is associated with visits to chiropractors, while these other types of dissections are not; patients with these other conditions, which have much more alarming symptoms, simply do not present to chiropractors.

 

This case is a good example of a patient with VAD in progress presenting to a chiropractor for the purpose of seeking relief from neck pain. Fortunately, the chiropractor was astute enough to ascertain that the patient’s symptoms were not suggestive of a �mechanical� cervical spine disorder, and appropriate diagnostic investigation was performed. However, if manipulation had been performed, the VAD that was already in progress from natural history may have been blamed on manipulation, after being detected on MRA imaging. Fortunately, in this case, the chiropractor was able to assist with early detection and treatment, and subsequently a stroke was likely averted.

 

Learning Points

 

  • A case is presented in which a patient saw a chiropractor, while seeking treatment for neck pain, and the history raised concern for possible vertebral artery dissection (VAD).
  • Rather than providing manipulative treatment, the chiropractor referred the patient for advanced imaging, which confirmed the diagnosis of VAD.
  • The case illustrates the importance of paying attention to subtle historical factors in patients with VAD.
  • It also serves as an example of a patient with a VAD in progress seeking the services of a chiropractor for the initial symptoms of the disorder.
  • In this case, early detection of the dissection occurred and the patient had a full recovery without any subsequent stroke.

 

Acknowledgments

 

The authors would like to acknowledge the assistance of Pierre Cote, DC, PhD, for his assistance with reviewing this manuscript.

 

Footnotes

 

Contributors: All the authors acknowledge that they have contributed the following to the submission of this manuscript: conception and design, drafting of the manuscript, critical revisions of the manuscript, literature review and references, and proof reading of the final manuscript.

 

Competing interests: None declared.

 

Patient consent: Obtained.

 

Provenance and peer review: Not commissioned; externally peer reviewed.

 

Information referenced from the National Center for Biotechnology Information (NCBI). The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

 

Cited by Dr. Alex Jimenez

 

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Additional Topics: Wellness

 

Overall health and wellness are essential towards maintaining the proper mental and physical balance in the body. From eating a balanced nutrition as well as exercising and participating in physical activities, to sleeping a healthy amount of time on a regular basis, following the best health and wellness tips can ultimately help maintain overall well-being. Eating plenty of fruits and vegetables can go a long way towards helping people become healthy.

 

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IMPORTANT TOPIC: EXTRA EXTRA: Treating Sciatica Pain

 

 

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References
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3.�Lee VH, Brown RD Jr, Mandrekar JN et al.�Incidence and outcome of cervical artery dissection: a population-based study.�Neurology�2006;67:1809�12.�doi:10.1212/01.wnl.0000244486.30455.71[PubMed]
4.�Schievink WI.�Spontaneous dissection of the cartoid and vertebral arteries.�N Engl J Med�2001;344:898�906.�doi:10.1056/NEJM200103223441206[PubMed]
5.�Volker W, Dittrich R, Grewe S et al.�The outer arterial wall layers are primarily affected in spontaneous cervical artery dissection.�Neurology�2011;76:1463�71.�doi:10.1212/WNL.0b013e318217e71c[PubMed]
6.�Gottesman RF, Sharma P, Robinson KA et al.�Clinical characteristics of symptomatic vertebral artery dissection: a systematic review.�Neurologist�2012;18:245�54.�doi:10.1097/NRL.0b013e31826754e1[PMC free article][PubMed]
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8.�Rothwell DM, Bondy SJ, Williams JI.�Chiropractic manipulation and stroke: a population-based case-control study.�Stroke�2001;32:1054�60.�doi:10.1161/01.STR.32.5.1054[PubMed]
9.�Smith WS, Johnston SC, Skalabrin EJ et al.�Spinal manipulative therapy is an independent risk factor for vertebral artery dissection.�Neurology�2003;60:1424�8.�doi:10.1212/01.WNL.0000063305.61050.E6[PubMed]
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11.�Evangelista A, Mukherjee D, Mehta RH et al.�Acute intramural hematoma of the aorta: a mystery in evolution.�Circulation�2005;111:1063�70.�doi:10.1161/01.CIR.0000156444.26393.80[PubMed]
12.�Tweet MS, Hayes SN, Pitta SR et al.�Clinical features, management, and prognosis of spontaneous coronary artery dissection.�Circulation�2012;126:579�88.�doi:10.1161/CIRCULATIONAHA.112.105718[PubMed]
13.�Choi S, Boyle E, Cote P et al.�A population-based case-series of Ontario patients who develop a vertebrobasilar artery stroke after seeing a chiropractor.�J Manipulative Physiol Ther�2011;34:15�22.�doi:10.1016/j.jmpt.2010.11.001[PubMed]
14.�Naggara O, Louillet F, Touze E et al.�Added value of high-resolution MR imaging in the diagnosis of vertebral artery dissection.�AJNR Am J Neuroradiol�2010;31:1707�12.�doi:10.3174/ajnr.A2165[PubMed]
15.�Haynes MJ, Vincent K, Fischhoff C et al.�Assessing the risk of stroke from neck manipulation: a systematic review.�Int J Clin Pract�2012;66:940�7.�doi:10.1111/j.1742-1241.2012.03004.x[PMC free article][PubMed]
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18.�Murphy DR.�Current understanding of the relationship between cervical manipulation and stroke: what does it mean for the chiropractic profession?Chiropr Osteopat�2010;18:22�doi:10.1186/1746-1340-18-22[PMC free article][PubMed]
19.�Engelter ST, Grond-Ginsbach C, Metso TM et al.�Cervical artery dissection: trauma and other potential mechanical trigger events.�Neurology�2013;80:1950�7.�doi:10.1212/WNL.0b013e318293e2eb[PubMed]
20.�Peters M, Bohl J, Th�mke F et al.�Dissection of the internal carotid artery after chiropractic manipulation of the neck.�Neurology�1995;45:2284�6.�doi:10.1212/WNL.45.12.2284[PubMed]
21.�Nadgir RN, Loevner LA, Ahmed T et al.�Simultaneous bilateral internal carotid and vertebral artery dissection following chiropractic manipulation: case report and review of the literature.�Neuroradiology2003;45:311�14.�doi:10.1007/s00234-003-0944-x[PubMed]
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What are Case Reports & Case Series?

What are Case Reports & Case Series?

The diagnosis of a variety of diseases has been effectively determined through clinical and experimental data. Research studies provide valuable information on the pathogenesis of many conditions and are often the primary source of information regarding new diseases or conditions. Case reports and case series are first level research studies, offering the most initial insights on a particular health issue through the personal experience of one or more people with a disease or condition. The following article describes the purpose of case reports and case series, and how they provide clinical and experimental data.

 

Learning Objectives

 

1. Case reports and case series describe the experience of one or more people with a disease.
2. Case reports and case series are often the first data alerting to a new disease or condition.
3. Case reports and case series have specific limitations:

  • a. Lack of a denominator to calculate rates of disease
  • b. Lack of a comparison group
  • c. Selecting study populations
  • d. Sampling variation

 

Case Reports and Case Series

 

Case reports and case series represent the most basic type of study design, in which researchers describe the experience of a single person (case report) or a group of people (case series). Typically, case reports and case series describe individuals who develop a particular new disease or condition. Case reports and case series can provide compelling reading because they present a detailed account of the clinical experience of individual study subjects. In contrast, studies that evaluate large numbers of individuals typically summarize the data using statistical measures, such as means and proportions.

 

Example 3.1. A case series describes 15 young women who develop breast cancer; 9 of these women report at least once weekly ingestion of foods packaged with the estrogenic chemical bisphenol A (BPA). Urine testing confirms the presence of BPA among all nine case women.

 

It is tempting to surmise from these data that BPA might be causally related to breast cancer. However, case reports/case series have important limitations that preclude inference of a causal relationship.

First, case reports/case series lack denominator data that are necessary to calculate the rate of disease. The denominator refers to the population from which the diseased subjects arose. For example, to calculate the incidence proportion or incidence rate of breast cancer among women exposed to BPA, the total number of women who were exposed to BPA or the total number of person-years at risk is needed.

 

Table 1 - Incidence Proportion & Incidence Rate

 

Disease rates are needed for comparison with historically reported disease rates, or with rates from a selected comparison group. Unfortunately, obtaining the necessary denominator data may not be easy. In this example, additional data sources are needed to determine the total number of BPA-exposed women from whom the breast cancer cases arose. The case series data alone cannot be used to calculate the rate of breast cancer because they do not include the total number of women who were exposed to BPA.

 

A second problem with case report/case series report data is the lack of a comparison group. The 60% prevalence of BPA exposure among women with breast cancer seems unusually high, but what is prevalence of BPA exposure among women without breast cancer? This comparison is critical for addressing the hypothesis that BPA might be a cause of breast cancer.

 

A third limitation of case reports/case series is that these studies often describe highly select individuals who may not represent the general population. For example, it is possible that the 15 breast cancer cases originated from a single hospital in a community with high levels of air pollution or other potential carcinogens. Under these conditions, a fair estimate of breast cancer incidence among non-BPA exposed women from the same community would be required to make an inference that BPA causes breast cancer.

 

A fourth limitation of case reports/case series is sampling variation. This concept will be explored in detail later in this book. The basic idea is that there is tremendous natural variation in disease development in humans. The fact that 9 of 15 women with breast cancer reported BPA exposure is interesting; however, this number may be very different in the next case series of 15 women with breast cancer simply due to chance. A precise estimate of the rate of a disease, independent from chance, can be obtained only by increasing the number of diseased subjects.

 

Recall the list of factors that are used to judge whether a factor may be a cause of disease:

 

1. Randomized evidence
2. Strength of association
3. Temporal relationship between exposure and outcome
4. Dose-response association
5. Biological plausibility

 

In general, case reports/case series rely almost exclusively on biological plausibility to make their case for causation. For the BPA and breast cancer case series, there is no randomized evidence, no measure of the strength of association between BPA and breast cancer, no reported dose�response association, and no evidence that BPA exposure preceded the development of breast cancer. The inference for causation derives completely from previous biological knowledge regarding the estrogenic effects of BPA.

 

Despite limitations of case series data, they may be highly suggestive of an important new association, disease process, or unintended side effect of a medication or treatment.

 

Example 3.2. In 2007, a case series described three cases of male prepubertal gynecomastia. The report included detailed information on each subjects� age, body size, serum levels of endogenous steroids, and known exposures to exogenous hormones. It was discovered that all three otherwise healthy boys had been exposed to some product containing lavender oil (lotion, shampoo, soap), and that in each case, the gynecomastia resolved upon discontinuation of the product. Subsequent in vitro studies demonstrated endocrine-disrupting activity of lavender oil. This novel case series data may lead to further investigations to determine whether lavender oil, a common ingredient in commercially available products, may be a cause of gynecomastia.

 

Example 3.3. A vaccine designed to prevent rotavirus infection was found to cause weakening of the intestinal muscle layers in animals. Following release of the vaccine, a number of cases of intussusception (when one portion of the bowel slides into the next) were reported in children who received the vaccine, with some fatal cases. The strong biological plausibility underlying this initial association, and knowledge that intussusception is otherwise rare in infants, was highly suggestive of a causal relationship and the vaccine was removed from the market.

 

Information referenced from B. Kestenbaum, Epidemiology and Biostatistics: An Introduction to Clinical Research, DOI 10.1007/978-0-387-88433-2_3, � Springer Science+Business Media, LLC 2009. The scope of our information is limited to chiropractic as well as to spinal injuries and conditions. To discuss the subject matter, please feel free to ask Dr. Jimenez or contact us at 915-850-0900 .

 

Referenced by Dr. Alex Jimenez

 

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Additional Topics: Wellness

 

Overall health and wellness are essential towards maintaining the proper mental and physical balance in the body. From eating a balanced nutrition as well as exercising and participating in physical activities, to sleeping a healthy amount of time on a regular basis, following the best health and wellness tips can ultimately help maintain overall well-being. Eating plenty of fruits and vegetables can go a long way towards helping people become healthy.

 

blog picture of cartoon paperboy big news

 

IMPORTANT TOPIC: EXTRA EXTRA: Treating Sciatica Pain

 

 

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